True freedom is impossible without a mind made free by discipline.

Ultimately there can be no disagreement between history, science, philosophy, and theology. Where there is disagreement, there is either ignorance or error.

I find the selectivity of erotic love - the choice of this man or this woman - much more intelligible if liking the person is the origin of sexual interest, rather than the other way.

Let me roughly divide books into those which compete with the movies and those with which the movies cannot compete. They are the books that can elevate or instruct. If they are fine works of fiction, they can deepen your appreciation of human life. If they are serious works of nonfiction, they can inform or enlighten you.

Theories of love are found in the works of scientists, philosophers, and theologians.

If we consider men and women generally, and apart from their professions or occupations, there is only one situation I can think of in which they almost pull themselves up by their bootstraps, making an effort to read better than they usually do. When they are in love and are reading a love letter, they read for all they are worth.

Conjugal love, or the friendship of spouses, persists after sexual desires have weakened, withered, and disappeared.