Reason is man's faculty for grasping the world by thought, in contradiction to intelligence, which is man's ability to manipulate the world with the help of thought. Reason is man's instrument for arriving at the truth, intelligence is man's instrument for manipulating the world more successfully; the former is essentially human, the latter belongs to the animal part of man.

The average American has separated his private life from his existence as a member of his society, and leaves that to the specialists in the government to take care of.

Our vitality, and the vitality of each nation, rests on the sincerity and depth of the faith in the ideas which it announces, or pronounces.

Mother's love is peace. It need not be acquired, it need not be deserved.

Today it is not alive. What, then, is this experience of humanism? With the above survey I have tried to show you that the experience of humanism is that — as Terence expressed it — “Nothing human is alien to me”; that nothing which exists in any human being does not exist in myself. I am the criminal and I am the saint. I am the child and I am the adult. I am the man who lived a hundred thousand years ago and I am the man who, provided we don't destroy the human race, will live hundred thousand years from now.

The scars left from the child's defeat in the fight against irrational authority are to be found at the bottom of every neurosis.

The more the drive toward life is thwarted, the stronger is the drive toward destruction; the more life is realized, the less is the strength of destructiveness. Destructiveness is the outcome of unlived life.