The dog [in Pavlov's experiments] does not continue to salivate whenever it hears a bell unless sometimes at least an edible offering accompanies the bell. But there are innumerable instances in human life where a single association, never reinforced, results in the establishment of a life-long dynamic system. An experience associated only once with a bereavement, an accident, or a battle, may become the center of a permanent phobia or complex, not in the least dependent on a recurrence of the original shock.

Thwarted lives have the most character-conditioned hate

The outlines of the needed psychology of becoming can be discovered by looking within ourselves; for it is knowledge of our own uniqueness that supplies the first, and probably the best, hints for acquiring orderly knowledge of others.

The scientist, by the very nature of his commitment, creates more and more questions, never fewer. Indeed the measure of our intellectual maturity, one philosopher suggests, is our capacity to feel less and less satisfied with our answers to better problems.

Life is too short so we must generalize.

Personality is and does something...It is what lies behind specific acts and within the individual

As partisans of our own way of life, we cannot help thinking in a partisan manner.