I know that I am intelligent, because I know that I know nothing.

Before you embark on a journey of revenge, dig two graves.

And it must follow, as the night the day, thou canst not then be false to any man.

Knowing yourself is the beginning of all wisdom.

The world is changing very fast. Big will not beat small anymore. It will be the fast beating the slow.

Positive, adj.: Mistaken at the top of one's voice.