Excellence is never an accident. It is always the result of high intention, sincere effort, and intelligent execution; it represents the wise choice of many alternatives - choice, not chance, determines your destiny.

Emotions of any kind can be evoked by melody and rhythm; therefore music has the power to form character.

Men come together in cities in order to live: they remain together in order to live the good life

The more you know, the more you know you don't know.

One swallow does not make a spring, nor does one fine day.

Anaximenes and Anaxagoras and Democritus say that its [the earth's] flatness is responsible for it staying still: for it does not cut the air beneath but covers it like a lid, which flat bodies evidently do: for they are hard to move even for the winds, on account of their resistance.

A common danger unites even the bitterest enemies.