Plato
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Wise men speak because they have something to say; Fools because they have to say something.

Human behavior flows from three main sources: desire, emotion, and knowledge.

Music is a moral law. It gives soul to the universe, wings to the mind, flight to the imagination, and charm and gaiety to life and to everything.

Courage is knowing what not to fear.

Love is a serious mental disease.

Ignorance, the root and stem of all evil.

This City is what it is because our citizens are what they are.

A good decision is based on knowledge and not on numbers.

They certainly give very strange names to diseases.

For a man to conquer himself is the first and noblest of all victories.

The greatest wealth is to live content with little.

Walking is magic. Can't recommend it highly enough. I read that Plato and Aristotle did much of their brilliant thinking together while ambulating. The movement, the meditation, the health of the blood pumping, and the rhythm of footsteps... this is a primal way to connect with one's deeper self.

Paula Cole

There are two things a person should never be angry at, what they can help, and what they cannot.

Ignorance of all things is an evil neither terrible nor excessive, nor yet the greatest of all; but great cleverness and much learning, if they be accompanied by a bad training, are a much greater misfortune.

Nothing can be more absurd than the practice that prevails in our country of men and women not following the same pursuits with all their strengths and with one mind, for thus, the state instead of being whole is reduced to half.

Better a little which is well done, than a great deal imperfectly.

If I were again beginning my studies, I would follow the advice of Plato and start with mathematics.

Galileo Galilei