Unless we love and are loved, each of us is alone, each of us is deeply lonely.

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.

All genuine learning is active, not passive.

The truly great books are the few books that are over everybody's head all of the time.

The person who says he knows what he thinks but cannot express it usually does not know what he thinks.

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

Men value things in three ways: as useful, as pleasant or sources of pleasure, and as excellent, or as intrinsically admirable or honorable.