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Knowing yourself is the beginning of all wisdom.

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There is only one way to avoid criticism: do nothing, say nothing, and be nothing.

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To perceive is to suffer.

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Those who know, do. Those that understand, teach.

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youth is easily deceived because it is quick to hope.

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It is the mark of an educated mind to be able to entertain a thought without accepting it.

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The happy life is thought to be one of excellence; now an excellent life requires exertion, and does not consist in amusement. If Eudaimonia, or happi...more

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The pleasures arising from thinking and learning will make us think and learn all the more. 1153a 23