If one wants another only for some self-satisfaction, usually in the form of sensual pleasure, that wrong desire takes the form of lust rather than love.

Think how different human societies would be if they were based on love rather than justice. But no such societies have ever existed on earth.

Angels are able to know and understand better than the human intellect can, precisely because such knowledge and understanding comes to them by way of ideas infused in them by God.

We wish the joy of love, the joy of companionship, of being in the company of, in the presence of the person we love, of living a common life with that person, perhaps ultimately the joy of perfect union.

To agree without understanding is inane. To disagree without understanding is impudent.

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.

Not to engage in this pursuit of ideas is to live like ants instead of like men.