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For the things we have to learn before we can do, we learn by doing.
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Happiness is at once the best, the noblest, and the pleasantest of things.
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Madness is badness of spirit, when one seeks profit from all sources.
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Anybody can become angry - that is easy, but to be angry with the right person and to the right degree and at the right time and for the right purpose, and in the right way - that is not within everybody's power and is not easy.
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Why is it that all men who are outstanding in philosophy, poetry or the arts are melancholic?
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They should rule who are able to rule best.
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For we are inquiring not in order to know what virtue is, but in order to become good, since otherwise our inquiry would have been of no use.
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It is well to be up before daybreak, for such habits contribute to health, wealth, and wisdom.
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First, have a definite, clear practical ideal; a goal, an objective. Second, have the necessary means to achieve your ends; wisdom, money, materials, and methods. Third, adjust all your means to that end.
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The hand is the tool of tools.
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The true nature of anything is what it becomes at its highest.
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Virtue is the golden mean between two vices, the one of excess and the other of deficiency.
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One who faces and who fears the right things and from the right motive, in the right way and at the right time, posseses character worthy of our trust and admiration.
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Between husband and wife friendship seems to exist by nature, for man is naturally disposed to pairing.
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We give up leisure in order that we may have leisure, just as we go to war in order that we may have peace.
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A good man may make the best even of poverty and disease, and the other ills of life; but he can only attain happiness under the opposite conditions.
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Learning is not child's play; we cannot learn without pain.
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Every realm of nature is marvelous.
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Character is that which reveals moral purpose, exposing the class of things a man chooses and avoids.
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People do not naturally become morally excellent or practically wise. They become so, if at all, only as the result of lifelong personal and community effort.
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The only stable state is the one in which all men are equal before the law.
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For though we love both the truth and our friends, piety requires us to honor the truth first.
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The quality of life is determined by its activities.
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Therefore, the good of man must be the end of the science of politics.