The only true wisdom is in knowing you know nothing.

There is only one good, knowledge, and one evil, ignorance.

One can have no smaller or greater mastery than mastery of oneself.

Time stays long enough for anyone who will use it.

Wisdom is the daughter of experience.

Art is never finished, only abandoned.

Realize that everything connects to everything else.

If you can't explain it to a six year old, you don't understand it yourself.

The noblest pleasure is the joy of understanding.