“Nature does nothing in vain, and in the use of means to her goals she is not prodigal.”
Third Thesis
Idea for a Universal History from a Cosmopolitan Point of View (1784)
Context: Nature does nothing in vain, and in the use of means to her goals she is not prodigal. Her giving to man reason and the freedom of the will which depends upon it is clear indication of her purpose. Man accordingly was not to be guided by instinct, not nurtured and instructed with ready-made knowledge; rather, he should bring forth everything out of his own resources.
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Immanuel Kant 200
German philosopher 1724–1804Related quotes

“4934. There is nothing more precious than Time, and nothing more prodigally wasted.”
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)

Source: The Nine Emotional Lives of Cats (2002), Ch. 2

“Nature made us men, and she surrenders not her children without a struggle.”
Confessions Of A Sceptic
The Nemesis of Faith (1849)
Context: Once in our lives we have all to choose. More or less we have all felt once the same emotions. We have not always been what the professions make of us. Nature made us men, and she surrenders not her children without a struggle. I will go back to my story now with but this one word, that it is these sons of genius, and the fate they meet with, which is to me the one sole evidence that there is more in "this huge state" than what is seen, and that in very truth the soul of man is not a thing which comes and goes, is builded and decays like the elemental frame in which it is set to dwell, but a very living force, a very energy of God's organic Will, which rules and moulds this universe.
For what are they? Say not, say not, it is but a choice which they have made; and an immortality of glory in heaven shall reward them for what they have sacrificed on earth. It may be so; but they do not ask for it. They are what they are from the Divine power which is in them, and you would never hear their complainings if the grave was the gate of annihilation.