This is metaphorical language, but you can say that some people are living on the level of the sex organs, and that's all they're living for. That's the meaning of life. This is Freud's philosophy, is it not? Then you come to the Adlerian philosophy of the will to power, that all of life is centered on obstructions and overcoming the obstructions. Well, sure, that's a perfectly good life, and those are forms of divinity also. But they are on the animal level. Then there comes another kind of life, which involves giving oneself to others one way or another. This is the one that's symbolized in the opening of the heart.

The Power of Myth by Joseph Campbell