Pleasure is not the goal of man, but knowledge. Pleasure and happiness comes to an end. It is a mistake to suppose that pleasure is the goal. The cause of all the miseries we have in the world is that men foolishly think pleasure to be the ideal to strive for. After a time man finds that it is not happiness, but knowledge, towards which he is going, and that both pleasure and pain are great teachers.

Eight Lectures (ed. 1896)