Is "I" extendable to other subjects such as he, she, you, it or they? Or is cogito strictly to "I" only? If it does, then could you say, "He thinks therefore he exists", or "It thinks, therefore it exists."?
If it is only for "I", then wouldn't it be just a solipsistic utterance?
— Corvus
Just realised that you have not answered to this question. What's your thought on this point? — Corvus
Whoever thinks, whoever doubts, whoever is subject to deception much exist.
I don't exist is untrue (not from cogito, but from my sensory perception), therefore it implies cogito is untrue as well. Agree? — Corvus
Does it entail then,Whoever thinks, whoever doubts, whoever is subject to deception much exist.
But that is not the case from the scientific point of view. I must exist first before I am able to think, or sense the world. These are the biological facts. Remember when you were born? You didn't know anything, and you didn't think anything. You didn't know any language, so didn't speak anything intelligible. Your mind was a blank sheet of paper (by metaphor). Then you grew up picking up the ability to speak, see, think .... etc etc?No.I must exist in order to have sensory perception. He does not doubt that he senses. What he doubts is the judgment that what he senses corresponds to anything outside his mind. — Fooloso4
Does it entail then,
God thinks (doubts), therefore God exists? — Corvus
But that is not the case from the scientific point of view. — Corvus
But all thoughts are private to the thinker. I am only conscious of my thought, and you would be, I reckon, too. If God thinks, is the same category of inference to If you think, If she think, or if they think, then they must exist. What makes "If you think, then you exist" more probable than "if God thinks, God exists"?It does not entail that God thinks, but if God does think then God exists. — Fooloso4
Would you not agree it is a commonsense knowledge rather than a contemporary Science? Even ancient Greeks would have known about it.No doubt that if Descartes has the benefit of contemporary science some of his views would change. — Fooloso4
We see how conflicted Descartes is ... — J
He also clearly has trouble with using "mind" and "soul" interchangeably. — J
If his own nature is a "totality of things bestowed by God," surely this is the soul, rather than a thinking thing. — J
All these represent criticisms of Descartes on his own terms, pointing out contradictions or inconsistencies. — J
Descartes writes to one of his more imprudent disciples:
Do not propose new opinions as new, but retain all the old terminology for
supporting new reasons; that way no one can find fault with you, and those who
grasp your reasons will by themselves conclude to what they ought to understand.
Why is it necessary for you to reject so openly the [Aristotelian doctrine of]
substantial forms? Do you not recall that in the Treatise on Meteors I expressly
denied that I rejected or denied them, but declared only that they were not
necessary for the explication of my reasons?
– René Descartes to Regius, January, 1642, Œuvres de Descartes, 3:491-
92, quoted and translated by Hiram Caton in “The Problem of Descartes’
Sincerity,” 363
From the first paragraph of Descartes’ early, unpublished “Private Thoughts”:
I go forward wearing a mask [larvatus prodeo].
– René Descartes, “Cogitationes Privatae,” in Œuvres de Descartes, 10:213
Descartes took care not to speak so plainly [as Hobbes] but he could not help revealing
his opinions in passing, with such address that he would not be understood save by those
who examine profoundly these kinds of subjects.
– G. W. Leibniz, Sämtliche Schriften und Briefe, 2.1:506, quoted and translated
by Richard Kennington in On Modern Origins, 197
For example, here is Leibniz, reacting to Descartes’ seeming embrace of the view that all
necessary truths, like the principle of non-contradiction, are the product of God’s free and
arbitrary will:
I cannot even imagine that M. Descartes can have been quite seriously of this opinion….
He only made pretence to go [there]. It was apparently one of his tricks, one of his
philosophic feints: he prepared for himself some loophole, as when for instance he
discovered a trick for denying the movement of the earth, while he was a Copernican in
the strictest sense.
– G. W. Leibniz, Theodicy, 244 (2.186)
Whatever he recounts about the distinction between the two substances [mind and body],
it is obvious that it was only a trick, a cunning devise to make the theologians swallow
the poison hidden behind an analogy that strikes everyone and that they alone cannot see.
– Julien Offray de La Mettrie, Machine Man, 35
After corresponding with Descartes concerning the issue of whether animals were mere
machines, Henry More concluded that Descartes was “an abundantly cunning and abstruse
genius” who insinuated that mind as an incorporeal substance is a “useless figment and
chimera.”
– Henry More, Philosophical Writings, 184, 197-98
Thus one is right to accuse Descartes of atheism, seeing that he very energetically
destroyed the weak proofs of the existence of God that he gave.
– Baron d'Holbach, Système de la nature, 2:150, quoted and translated by Hiram
Caton in “The Problem of Descartes’ Sincerity,” 355
But Descartes' concern was not simply personal. It was to displace the authority of the Church from the mind of the thinking man, — Fooloso4
But all thoughts are private to the thinker. — Corvus
Therefore your claim that whoever thinks, must exist, is false? — Corvus
Would you not agree it is a commonsense knowledge rather than a contemporary Science? Even ancient Greeks would have known about it. — Corvus
Wouldn't the Church consider this heresy? — Fooloso4
Rather than reform the Church he attempts to reform man, — Fooloso4
when a careful writer says things that seem contradictory . . . — Fooloso4
I'll just comment that you do this a lot. You come up with some weird subterfuge related to a famous philosopher and then announce your theories as if they're facts. — frank
For us who are believers,it is enough to accept on faith that the human soul does not die with the body, and that God exists; but in the case of unbelievers, it seems that there is no religion, and practically no moral virtue, that they can be persuaded to adopt until these two truths are proved to them by natural reason.
It is of course quite true that we must believe in the existence of God because it is a doctrine of Holy Scripture, and conversely, that we must believe Holy Scripture because it comes from God; for since faith is the gift of God, he who gives us grace to believe other things can also give us grace to believe that he exists. But this argument cannot be put to unbelievers because they would judge it to be circular.
But in its eighth session the Lateran Council held under Leo X condemned those who take this position, and expressly enjoined Christian philosophers to refute their arguments and use ail their powers to establish the truth; so l have not hesitated to attempt this task as well.
In addition, I know that the only reason why many irreligious people are unwilling to believe that God exists and that the human mind is distinct from the body is the alleged fact that no one has hitherto been able to demonstrate these points. Now I completely disagree with this: I think that when properly understood almost all the arguments that have been put forward on these issues by the great men have the force of demonstrations, and I am convinced that it is scarcely possible to provide
any arguments which have not already been produced by someone else.
Nevertheless, I think there can be no more useful service to be rendered in
philosophy than to conduct a careful search, once and for all, for the best
of these arguments, and to set them out so precisely and clearly as to produce for the future a general agreement that they amount to demonstrative proofs. And finally, I was strongly pressed to undertake
this task by several people who knew that I had developed a method for resolving certain difficulties in the sciences - not a new method (for nothing is older than the truth), but one which they had seen me use with some success in other areas; and I therefore thought it my duty to make some attempt to apply it to the matter in hand.
But although I regard the proofs as quite certain and evident, I cannot therefore persuade myself that they are suitable to be grasped by everyone. In geometry there are many writings left by
Archimedes, Apollonius, Pappus and others which are accepted by everyone as evident and certain because they contain absolutely nothing that is not very easy to understand when considered on its own, and each step fits in precisely with what has gone before; yet because they are
somewhat long, and demand a very attentive reader, it is only comparatively few people who understand them. In the same way, although the proofs I employ here are in my view as certain and evident as the proofs of geometry, if not more so, it will, I fear, be impossible for many people
to achieve an adequate perception of them, both because they are rather long and some depend on others, and also, above all, because they require a mind which is completely free from preconceived opinions and which can easily detach itself from involvement with the senses. Moreover, people who have an aptitude for metaphysical studies are certainly not to be found in the world in any greater numbers than those who have an aptitude for geometry. What is more, there is the difference that in
geometry everyone has been taught to accept that as a rule no proposition is put forward in a book without there being a conclusive demonstration available; so inexperienced students make the mistake of accepting what is false, in their desire to appear to understand it, more often than they make the mistake of rejecting what is true. In philosophy, by contrast, the belief is that everything can be argued either way; so few people pursue the truth, while the great majority build up their reputation for ingenuity by boldly attacking whatever is most sound.
The reputation of your Faculty is so firmly fixed in the minds of all, and the name of the Sorbonne has such authority that, with the exception of the Sacred Councils, no institution carries more weight
than yours in matters of faith; while as regards human philosophy, you are thought of as second to none, both for insight and soundness and also for the integrity and wisdom of your pronouncements.
but this sounds more like a 19th century way of reading than 17th century. — J
To say in one's unpublished Private Thoughts that one "goes forth wearing a mask" surely speaks to the difference we all experience between our private and public selves, no? — J
Why would you think he was referring to his philosophical writings? — J
Do not propose new opinions as new, but retain all the old terminology for
supporting new reasons; that way no one can find fault with you, and those who
grasp your reasons will by themselves conclude to what they ought to understand.
I suppose it depends on how you evaluate Descartes' status as a philosopher — J
Is that a fact or an opinion? Evidence? — Fooloso4
I have a very good reason for offering this book to you, and I am confident that you will have an equally good reason for giving it your protection ...
If he'd wanted freedom from the Church, that was easily available in nearby Protestant territory. — frank
How does one reveal one's own contents of thoughts, and make them public?Not f he reveals them of makes them public. — Fooloso4
"Whoever thinks must exist" is a guess at best. It is not a logical statement. Who is "whoever"? All thoughts are private to the individual who thinks. One can only be conscious of one's own thinking. All others' thoughts could be communicated to the others via language. But language itself is not thoughts.Therefore your claim that whoever thinks, must exist, is false? — Corvus
I don't see how this follows. — Fooloso4
You sounded as if Descartes had no contemporary scientific knowledge at his life time, hence he could be excused making a nonsense claim. And my point to that was, that one's bodily existence is precondition to mental operations is not a contemporary science, but a very basic biological fact which could be even classed as a commonsense knowledge.You asked about the scientific point of view, which is not the same as common sense knowledge. — Fooloso4
It would be absurd reject one's own bodily existence prior to thinking that one exists. Therefore cogito is not a sound statement. "I exist, therefore I think." is a valid and sound statement.As to whether he first exists and only subsequently thinks, he rejects this. He exists as a thinking thing. As such, it makes no sense to separate his existing and this thinking. — Fooloso4
but this sounds more like a 19th century way of reading than 17th century.
— J
None of the quotes are from 19th century authors. — Fooloso4
What is the context? Which opinions is Leibniz referring to here? What are "these kinds of subjects"? I'm guessing this was about religious doctrine, where plain speaking in a Catholic country could get you in trouble.Descartes took care not to speak so plainly [as Hobbes] but he could not help revealing
his opinions in passing, with such address that he would not be understood save by those
who examine profoundly these kinds of subjects.
He did express pleasure in seeing new places. But the question of feeling compelled to move is the question raised above regarding opinions unpopular with those with power. — Paine
Linguistic expressions are not thoughts themselves. — Corvus
"Whoever thinks must exist" is a guess at best. It is not a logical statement. — Corvus
Who is "whoever"? — Corvus
All thoughts are private to the individual who thinks. — Corvus
You sounded as if Descartes had no contemporary scientific knowledge at his life time — Corvus
And my point to that was, that one's bodily existence is precondition to mental operations is not a contemporary science, but a very basic biological fact which could be even classed as a commonsense knowledge. — Corvus
The point is even if you said, I think therefore I exist, it doesn't say anything about the content of your thought. It is just a linguistic expression. I wouldn't know what your true thoughts would be like.Okay, but I don't see the point. — Fooloso4
It is not about "can think but not exist", but it is about "must exist first before can think."Can you explain how someone can think but not exist? — Fooloso4
Whoever exists, exists is a tautology, therefore meaningless.Anyone and everyone who exists. — Fooloso4
If all thoughts are strictly private to the thinkers, then your cogito is just a solipsistic utterance to me. It doesn't give any meaningful knowledge to anyone else.I don't see the connection with existence. — Fooloso4
If that is the case, then he would have known the fact that he must have existed before thinking.To the contrary, he was on the forefront of science. — Fooloso4
He still must exist before thinking. The body must exist first before the mind can start operating.Descartes uses the terms soul and mind interchangeably. There are plenty of people who do not lack commonsense who believe in the soul exists apart from the body. — Fooloso4
I'm guessing this was about religious doctrine, where plain speaking in a Catholic country could get you in trouble. — J
...there are many other things in them; and I tell you, between ourselves, that these
six Meditations contain all the foundations of my physics. But that must not be spread abroad, if you please; for those who follow Aristotle will find it more difficult to approve them. I hope that [my readers] will accustom themselves insensibly to my principles, and will come to recognize their truth, before
perceiving that they destroy those of Aristotle.
The point is even if you said, I think therefore I exist, it doesn't say anything about the content of your thought. — Corvus
Whoever exists, exists is a tautology, therefore meaningless. — Corvus
Who is "whoever"? — Corvus
whoever thinks, must exist, — Fooloso4
If all thoughts are strictly private to the thinkers, then your cogito is just a solipsistic utterance to me. It doesn't give any meaningful knowledge to anyone else. — Corvus
If that is the case, then he would have known the fact that he must have existed before thinking. — Corvus
my whole self insofar as I am a combination of body and mind ...
My sole concern here is with what God has given to me as a combination of mind and body.
All of this makes it clear that, despite God’s immense goodness, the nature of man as a combination of mind and body is such that it is bound to mislead him from time to time. — Fooloso4
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