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

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

Friendship is a very taxing and arduous form of leisure activity.

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

The ultimate end of education is happiness or a good human life, a life enriched by the possession of every kind of good, by the enjoyment of every type of satisfaction.

Love without conversation is impossible.

Love can be unselfish, in the sense of being benevolent and generous, without being selfless.

The love which moves the world, according to common Christian belief, is God's love and the love of God.

Ultimately, we wish the joy of perfect union with the person we love.

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

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

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