As you think, so shall you become.

Truth springs from argument amongst friends.

Freedom is a muscle... you have to exercise it.

Every formula which expresses a law of nature is a hymn of praise to God.

Intelligence is really a kind of taste: taste in ideas.

The human body is the best picture of the human soul.

Freedom is the open window through which pours the sunlight of the human spirit and human dignity.

Wisdom is keeping a sense of fallibility of all our views and opinions.

I suffered evils, but without allowing them to rob me of the freedom to expand.

Never tell people how to do things. Tell them what to do and they will surprise you with their ingenuity.