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Not to know of what things one should demand demonstration, and of what one should not, argues want of education.
Aristotle
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More quotes by Aristotle
Something is infinite if, taking it quantity by quantity, we can always take something outside.
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No man of high and generous spirit is ever willing to indulge in flattery the good may feel affection for others, but will not flatter them.
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To know what virtue is is not enough we must endeavor to possess and to practice it, or in some other manner actually ourselves to become good.
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He who can be, and therefore is, another's, and he who participates in reason enough to apprehend, but not to have, is a slave by nature.
Aristotle
It would then be most admirably adapted to the purposes of justice, if laws properly enacted were, as far as circumstances admitted, of themselves to mark out all cases, and to abandon as few as possible to the discretion of the judge.
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One may go wrong in many different ways, but right only in one, which is why it is easy to fail and difficult to succeed.
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We have next to consider the formal definition of virtue.
Aristotle
For contemplation is both the highest form of activity (since the intellect is the highest thing in us, and the objects that it apprehends are the highest things that can be known), and also it is the most continuous, because we are more capable of continuous contemplation than we are of any practical activity.
Aristotle
The moral virtues, then, are produced in us neither by nature nor against nature. Nature, indeed, prepares in us the ground for their reception, but their complete formation is the product of habit.
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Tragedy is an imitation not of men but of a life, an action
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The vigorous are no better than the lazy during one half of life, for all men are alike when asleep.
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Art is identical with a state of capacity to make, involving a true course of reasoning.
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The hardest victory is the victory over self.
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Excellence is an art won by training and habituation. We do not act rightly because we have virtue or excellence, but we rather have those because we have acted rightly. We are what we repeatedly do. Excellence, then, is not an act but a habit.
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Purpose is a desire for something in our own power, coupled with an investigation into its means.
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We assume therefore that moral virtue is the quality of acting in the best way in relation to pleasures and pains, and that vice is the opposite.
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If the consequences are the same it is always better to assume the more limited antecedent, since in things of nature the limited, as being better, is sure to be found, wherever possible, rather than the unlimited.
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We do not know a truth without knowing its cause.
Aristotle
Great is the good fortune of a state in which the citizens have a moderate and sufficient property.
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No one praises happiness as one praises justice, but we call it a 'blessing,' deeming it something higher and more divine than things we praise.
Aristotle