The husband - by primitive instinct partly, certainly by ancient tradition - regards himself as the active partner in matters of love and his own pleasure as legitimately the prime motive for activity.

Birth-control is effecting, and promising to effect, many functions in our social life.

Reproduction is so primitive and fundamental a function of vital organisms that the mechanism by which it is assured is highly complex and not yet clearly understood. It is not necessarily connected with sex, nor is sex necessarily connected with reproduction.

Pain and death are part of life. To reject them is to reject life itself.

It is here [in mathematics] that the artist has the fullest scope of his imagination.

The romantic embrace can only be compared with music and with prayer.

What we call progress is the exchange of one nuisance for another nuisance.