Infantile love follows the principle: "I love because I am loved." Mature love follows the principle: "I am loved because I love." Immature love says: "I love you because I need you." Mature love says: "I need you because I love you.

Is love an art? Then it requires knowledge and effort.

First of all, the practice of an art requires discipline. I shall never be good at anything if I do not do it in a disciplined way; anything I do only if "I am in the mood" may be a nice or amusing hobby, but I shall never become a master in that art.

...in spite of the deep-seated craving for love, almost everything else is considered to be more important than love: success, prestige, money, power-almost all our energy is used for the learning of how to achieve these aims, and almost none to learn the art of loving. Could it be that only those things are considered worthy of being learned with which one can earn money or prestige, and that love, which "only" profits the soul, but is profitless in the modern sense, is a luxury we have no right to spend energy on?

The capacity to be puzzled is the premise of all creation, be it in art or in science.