You can exterminate a human being, but not an idea.

Leeches live by guns, legends live by ideas.

Every high ideal appears utopian to the ordinary masses, until they see it manifesting in front of their own eyes.

If you have assimilated even one idea and made it your life, you have more education than any person who has got by heart the entire Library of Congress.

The world will not remember the hundred ideas that you talk about now and then, it will remember only the one idea that you practice your whole life as gospel.

Whatever you do, do it with your whole being. Become one with that act. Forget thirst, hunger, sleep, sex, and give your whole existence to one idea - an idea to which you can boldly and unhesitantly point and say "this idea is me". You and your idea must become one, for that idea to become a reality.

The body is only an instrument for the idea - it's the idea that lives not the body.

You can kill the person, but not the idea behind the person.

If you want to be drunk, become drunk with an idea. If you want pleasure, have pleasure from the pursuit of your passion. If you want to be indoctrinated, then be so by the natural law of humanism.