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Aristotle can be regarded as the father of logic. But his logic is too scholastic, full of subtleties, and fundamentally has not been of much value to the human understanding. It is a dialectic and an organon for the art of disputation.
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Religion is too important a matter to its devotees to be a subject of ridicule. If they indulge in absurdities, they are to be pitied rather than ridiculed.
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All our knowledge begins with the senses...
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I do not, therefore, need any penetrating acuteness to see what I have to do in order that my volition be morally good. Inexperienced in the course of the world, incapable of being prepared for whatever might come to pass in it, I ask myself only: can you also will that your maxim become a universal law?
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The inscrutable wisdom through which we exist is not less worthy of veneration in respect to what it denies us than in respect to what it has granted.
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The nice thing about living in a small town is that when you don't know what you're doing, someone else does.
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Great minds think for themselves.
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Christianity possesses the great advantage over Judaism of being represented as coming from the mouth of the first Teacher not as a statutory but as a moral religion, and as thus entering into the closest relation with reason so that, through reason, it was able of itself, without historical learning, to be spread at all times and among all peoples with the greatest trustworthiness.
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Im Reiche der Zwecke hat alles entweder einen Preis oder eine Würde. Was einen Preis hat, an dessen Stelle kann auch etwas anderes als Äquivalent gesetzt werden; was dagegen über allen Preis erhaben ist, mithin kein Äquivalent verstattet, das hat eine Würde.
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All trades, arts, and handiworks have gained by division of labor... Where the different kinds of work are not distinguished and divided, where everyone is a jack-of-all-trades, there manufactures remain still in the greatest barbarism.
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The wish to talk to God is absurd. We cannot talk to one we cannot comprehend - and we cannot comprehend God; we can only believe in Him. The uses of prayer are thus only subjective.
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Man relates to material things through direct insight rather than reason.
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The evil effect of science upon men is principally this, that by far the greatest number of those who wish to display a knowledge of it accomplish no improvement at all of the understanding, but only a perversity of it, not to mention that it serves most of them as a tool of vanity.
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An action is essentially good if the motive of the agent be good, regardless of the consequences.
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Good and strong will. Mechanism must precede science (learning). Also in morals and religion? Too much discipline makes one narrow and kills proficiency. Politeness belongs, not to discipline, but to polish, and thus comes last.
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It is therefore correct to say that the senses do not err - not because they always judge rightly, but because they do not judge at all.
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It is precisely in knowing its limits that philosophy consists.
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It is often necessary to make a decision on the basis of knowledge sufficient for action but insufficient to satisfy the intellect.
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Die Verehrung mächtiger unsichtbarer Wesen, welche dem hülflosen Menschen durch die natürliche, auf dem Bewusstsein seines Unvermögens gegründete Furcht abgenöthigt wurde, …
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Laziness and cowardice explain why so many men. . . remain under a life-long tutelage and why it is so easy for some men to set themselves up as the guardians of all the rest. . . If I have a book which understands for me, a pastor who has a conscience for me, a doctor who decides my diet, I need not trouble myself. If I am willing to pay, I need not think. Others will do it for me.
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When the man governed by self-interest, the god of this world, does not renounce it but merely refines it by the use of reason and extends it beyond the constricting boundary of the present, he is represented (Luke XVI, 3-9) as one who, in his very person as servant, defrauds his master self- interest and wins from him sacrifices in behalf of 'duty.'
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The public use of a man's reason must be free at all times, and this alone can bring enlightenment among men...
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Innocence is indeed a glorious thing; but, unfortunately, it does not keep very well and is easily led astray.
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Among all nations, through the darkest polytheism glimmer some faint sparks of monotheism.