In human relations one should penetrate to the core of loneliness in each person and speak to that.

Obviousness is always the enemy of correctness.

The discipline in your life should be one determined by your own desires and your own needs, not put upon you by society or authority.

Humanistic ethics is based on the principle that only humans themselves can determine the criterion for virtue and not an authority transcending us.

A life without adventure is likely to be unsatisfying, but a life in which adventure is allowed to take whatever form it will is sure to be short.

Perhaps the nuclear physicists have come so near to the ultimate secrets that He thinks it time to bring their activities to a stop. And what simpler method could He devise than to let them carry their ingenuity to the point where they exterminate the human race?

There can't be a practical reason for believing something that is not true.