Immanuel Kant Quotes
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The question is not so much whether there is life on Mars as whether it will continue to be possible to live on Earth.
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Look closely. The beautiful may be small.
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Physicians think they are doing something for you by labeling what you have as a disease.
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When I could have used a wife, I could not support one; and when I could support one, I no longer needed any.
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It is through good education that all the good in the world arises.
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Thoughts without content are empty, intuitions without concepts are blind... The understanding can intuit nothing, the senses can think nothing. Only through their union can knowledge arise.
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A lie is the abandonment and, as it were, the annihilation of the dignity by man.
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The arts of speech are rhetoric and poetry. Rhetoric is the art of transacting a serious business of the understanding as if it were a free play of the imagination; poetry that of conducting a free play of the imagination as if it were a serious business of the understanding.
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Nature does nothing in vain, and in the use of means to her goals she is not prodigal.
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At some future day it will be proved, I cannot say when and where, that the human soul is, while in earth life, already in an uninterrupted communication with those living in another world.
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Cruelty to animals is contrary to man's duty to himself, because it deadens in him the feeling of sympathy for their sufferings, and thus a natural tendency that is very useful to morality in relation to other human beings is weakened.
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Perhaps a revolution can overthrow autocratic despotism and profiteering or power-grabbing oppression, but it can never truly reform a manner of thinking; instead, new prejudices, just like the old ones they replace, will serve as a leash for the great unthinking mass.
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[R]eason is... given to us as a practical faculty, that is, as one that influences the will.
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Why were a few, or a single one, made at all, if only to exist in order to be made eternally miserable, which is infinitely worse than non-existence?
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Maturity is having the courage to use one's own intelligence!
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Freedom is the alone unoriginated birthright of man, and belongs to him by force of his humanity.
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A science of all these possible kinds of space [the higher dimensional ones] would undoubtedly be the highest enterprise which a finite understanding could undertake in the field of geometry... If it is possible that there could be regions with other dimensions, it is very likely that God has somewhere brought them into being.
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There is nothing higher than reason.
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Upon the solution of this problem, or upon sufficient proof of the impossibility of synthetical knowledge a priori, depends the existence or downfall of metaphysics.
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A society that is not willing to demand a life of somebody who has taken somebody else’s life is simply immoral.
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One is not rich by what one owns, but more by what one is able to do without with dignity.
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I feel a complete thirst for knowledge and an eager unrest to go further in it as well as satisfaction at every acquisition. There was a time when I believed that this alone could constitute the honor of mankind, and I had contempt for the ignorant rabble who know nothing.
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Act so as to use humanity, yourself and others, always as an end and never as a means to an end.
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The business of philosophy is not to give rules, but to analyze the private judgments of common reason.