Jealousy is not a barometer by which the depth of love can be read. It merely records the degree of the lover's insecurity.

We need every human gift and cannot afford to neglect any gift because of artificial barriers of sex or race or class or national origin.

If one cannot state a matter clearly enough so that even an intelligent twelve-year-old can understand it, one should remain within the cloistered walls of the university and laboratory until one gets a better grasp of one's subject matter.

The institution of marriage in all societies is a pattern within which the strains put by civilization on males and females alike must be resolved, a pattern within which men must learn, in return for a variety of elaborate rewards, new forms in which sexual spontaneity is still possible, and women must learn to discipline their receptivity to a thousand other considerations.

most people prefer to carry out the kinds of experiments that allow the scientist to feel that he is in full control of the situation rather than surrendering himself to the situation, as one must in studying human beings as they actually live.

The Samoan puts the burden of amatory success upon the man and believes that women need more initiating, more time for maturing of sexual feeling. A man who fails to satisfy a woman is looked upon as a clumsy, inept blunderer.

I devoutly believe that there is no difficulty between two people for which both are not responsible.