Pythagoras

The oldest, shortest words — "yes" and "no" — are those which require the most thought.

Choose rather to be strong of soul than strong of body.

Silence is better than unmeaning words.

Rest satisfied with doing well, and leave others to talk of you as they please.

Do not say a little in many words but a great deal in a few.

Friends are as companions on a journey, who ought to aid each other to persevere in the road to a happier life.

As soon as laws are necessary for men, they are no longer fit for freedom.

Reason is immortal, all else mortal.

There is geometry in the humming of the strings, there is music in the spacing of the spheres.