Immanuel Kant Quotes
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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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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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Three things tell a man: his eyes, his friends and his favorite 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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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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Two things fill the mind with ever new and increasing admiration and awe, the oftener and more steadily we reflect on them: the starry heavens above me and the moral law within me.
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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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A lie is the abandonment and, as it were, the annihilation of the dignity by man.
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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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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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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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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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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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[R]eason is... given to us as a practical faculty, that is, as one that influences the will.
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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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The business of philosophy is not to give rules, but to analyze the private judgments of common reason.
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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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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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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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If justice perishes, human life on Earth has lost its meaning.
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Animals... are there merely as a means to an end. That end is man.
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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.