Education is the sum total of one's experience, and the purpose of higher education is to widen our experiences beyond the circumscribed existence or our own daily lives.

... The person who, at any stage of a conversation, disagrees, should at least hope to reach agreement in the end. He should be as much prepared to have his own mind changed as seek to change the mind of another ... No one who looks upon disagreement as an occasion for teaching another should forget that it is also an occasion for being taught.

Erotic or sexual love can truly be love if it is not selfishly sexual or lustful.

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

The purpose of learning is growth, and our minds, unlike our bodies, can continue growing as we continue to live.

Freedom is the emancipation from the arbitrary rule of other men.

One of the aims of sexual union is procreation - the creation by reproduction of an image of itself, of the union.