This isn't a poem, strictly speaking. However it is some of the most lyrical prose that I have ever read. More so in that the lyricism survives or transcends translation, perfectly bridging form and content. It is from Fichte's Vocation of Man:
Shall I eat and drink only that I may hunger and thirst and eat and drink again, till the grave which is open beneath my feet shall swallow me up, and I myself become the food of worms? Shall I beget beings like myself, that they too may eat and drink and die, and leave behind them beings like themselves to do the same that I have done? To what purpose this ever-revolving circle, this ceaseless and unvarying round, in which all things appear only to pass away, and pass away only that they may re-appear unaltered;—this monster continually devouring itself that it may again bring itself forth, and bringing itself forth only that it may again devour itself?
This can never be the vocation of my being, and of all being. There must be something which exists because it has come into existence; and now endures, and cannot again re-appear, having once become such as it is. And this element of permanent endurance must be produced amid the vicissitudes of the transitory and perishable, maintain itself there, and be borne onwards, pure and inviolate, upon the waves of time.
Our race still laboriously extorts the means of its subsistence and preservation from an opposing Nature. The larger portion of mankind is still condemned through life to severe toil, in order to supply nourishment for itself and for the smaller portion which thinks for it;—immortal spirits are compelled to fix their whole thoughts and endeavours on the earth that brings forth their food. It still frequently happens, that when the labourer has finished his toil, and promises himself in return a lasting endurance both for himself and for his work, a hostile element will destroy in a moment that which it has cost him years of patient industry and deliberation to accomplish, and the assiduous and careful man is undeservedly made the prey of hunger and misery;—often do floods, storms, volcanoes, desolate whole countries, and works which bear the impress of a rational soul are mingled with their authors in the wild chaos of death and destruction. Disease sweeps into an untimely grave men in the pride of their strength, and children whose existence has as yet borne no fruit; pestilence stalks through blooming lands, leaves the few who escape its ravages like lonely orphans bereaved of the accustomed support of their fellows, and does all that it can do to give back to the desert regions which the labour of man has won from thence as a possession to himself. Thus it is now, but thus it cannot remain for ever. No work that bears the stamp of Reason, and has been undertaken to extend her power, can ever be wholly lost in the onward progress of the ages. The sacrifices which the irregular violence of Nature extorts from Reason, must at least exhaust, disarm, and appease that violence. The same power which has burst out into lawless fury, cannot again commit like excesses; it cannot be destined to renew its strength; through its own outbreak its energies must henceforth and for ever be exhausted. All those outbreaks of unregulated power before which human strength vanishes into nothing, those desolating hurricanes, those earthquakes, those volcanoes, can be nothing else than the last struggles of the rude mass against the law of regular, progressive, living, and systematic activity to which it is compelled in opposition to its own undirected impulses;—nothing but the last shivering strokes by which the perfect formation of our globe has yet to be completed. That resistance must gradually become weaker and at length be exhausted, since, in the regulated progress of things, there can be nothing to renew its strength; that formation must at length be completed, and our destined dwelling-place be made ready. Nature must gradually be resolved into a condition in which her regular action may be calculated and safely relied upon, and her power bear a fixed and definite relation to that which is destined to govern it,—that of man. In so far as this relation already exists, and the cultivation of Nature has obtained a firm footing, the works of man, by their mere existence, and by an influence altogether beyond the original intent of their authors, shall again react upon Nature, and become to her a new vivifying principle. Cultivation shall quicken and ameliorate the sluggish and baleful atmosphere of the primeval forests, deserts, and marshes; more regular and varied cultivation shall diffuse throughout the air new impulses to life and fertility; and the sun shall pour his most animating rays into an atmosphere breathed by healthful, industrious, and civilized nations. Science, first called into existence by the pressure of necessity, shall afterwards calmly and carefully investigate the unchangeable laws of Nature, review its powers at large, and learn to calculate their possible manifestations; and while closely following the footsteps of Nature in the living and actual world, form for itself in thought a new ideal one. Every discovery which Reason has extorted from Nature shall be maintained throughout the ages, and become the ground of new knowledge, for the common possession of our race. Thus shall Nature ever become more and more intelligible and transparent, even in her most secret depths; and human power, enlightened and armed by human invention, shall rule over her without difficulty, and the conquest, once made, be peacefully maintained. This dominion of man over Nature shall gradually be extended, until, at length, no farther expenditure of mechanical labour shall be necessary than what the human body requires for its development, cultivation, and health; and this labour shall cease to be a burden;—for a reasonable being is not destined to be a bearer of burdens.