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

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

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

We love even when our love is not requited.

Love without conversation is impossible.