The time when you need to do something is when no one else is willing to do it, when people are saying it can't be done.

The laws that Charondas gave to Catana,... A man might divorce his wife, or a wife her husband, said Charondas, but then he or she must not marry anyone younger than the divorced mate.

I came to think of myself, not as a dance and chaos of molecules, but as a brief and minute portion of that majestic process

Progress is the increasing control of the environment by life.

Philosophy is harmonized knowledge making a harmonious life; it is the self-discipline which lifts us to serenity and freedom. Knowledge is power, but only wisdom is liberty.

The crossroads of trade are the meeting place of ideas, the attrition ground of rival customs and beliefs; diversities beget conflict, comparison, thought; superstitions cancel one another, and reason begins.

When liberty exceeds intelligence, it begets chaos, which begets dictatorship.