If a theory can not be explained to a child, then the theory is probably worthless.

Knowledge of what is does not open the door directly to what should be.

If we trace out what we behold and experience through the language of logic, we are doing science; if we show it in forms whose interrelashionships are not accessible to our conscious thought but we are intuitively recognized as meaningful, we are doing art.

The concept of marriage must have been thought up by an unimaginative pig.

There is, however, one other human right which is infrequently mentioned but which seems to be destined to become very important: this is the right, or the duty, of the individual to abstain from cooperating in activities which he considers wrong or pernicious.

People will not disarm step by step; they will disarm at one blow or not at all.

What I seek to accomplish is simply to serve with my feeble capacity truth and justice, at the risk of pleasing no one.