Plato

"Good people do not need laws to tell them to act responsibly."

"The part can never be well unless the whole is well."

"Knowledge without justice ought to be called cunning rather than wisdom."

"Excess generally causes reaction, and produces a change in the opposite direction."

"The beginning is the most important part of the work."

"The penalty that good men pay for indifference to public affairs is to be ruled by evil men."

"Geometry will draw the soul toward truth and create the spirit of philosophy."

"All things flow and nothing stays still."

"When the mind is thinking it is talking to itself."

"Beauty lies in utility."

"The most important thing is not life, but the good life."

"Until philosophers rule as kings or kings learn the love of wisdom, cities will never have rest from evils."

"Time is a game played beautifully by children."

"Rhetoric is the art of persuading your audience."

"The study of philosophy is not that we may learn to think, but that we may learn to think better."

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

"The prison-house is the world, and the world is the prison-house."

"Even the God loves glory."

"Do not train children to learning by force and harshness."

"The only true wisdom is in knowing you know nothing."

"Necessity may be the plea for every infringement of human freedom."

"Beloved can mean lover as well as friend."

"The price of greatness is responsibility."

"Courage is a mean between two extremes."

"Leisure is the basis of culture."

"Better to be a human being dissatisfied than a pig satisfied."

"Opinion is the medium between knowledge and ignorance."

"Patience is the greatest prayer."

"One cannot step twice in the same river."

"Music is a more potent instrument than any other for education."