... 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.

Books are absent teachers.

My chief reason for choosing Christianity was because the mysteries were incomprehensible. What's the point of revelation if we could figure it out ourselves? If it were wholly comprehensible, then it would just be another philosophy.

The materialist assumption that spiritual substances do not exist is as much an act of faith as the religious belief in the reality of angels.

Aristotle uses a mother's love for her child as the prime example of love or friendship.

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

There is a strange fact about the human mind, a fact that differentiates the mind sharply from the body. The body is limited in ways that the mind is not. One sign of this is that the body does not continue indefinitely to grow in strength and develop in skill and grace. By the time most people are thirty years old, their bodies are as good as they will ever be; in fact, many persons' bodies have begun to deteriorate by that time. But there is no limit to the amount of growth and development that the mind can sustain. The mind does not stop growing at any particular age.