Note 2 — XIII THE VALUE OF LIFE (Optimism and Pessimism)

Our desire, in any given case, is directed to a particular object. The value of the pleasure of satisfaction, as we have seen, will be the greater in proportion as the quantity of the pleasure is greater relatively to the intensity of our desire.2 It depends, further, on this intensity how large a quantity of pain we are willing to bear in order to gain the pleasure. We compare the quantity of pain, not with the quantity of pleasure, but with the intensity of our desire. He who finds great pleasure in eating will, by reason of his pleasure in better times, be more easily able to bear a period of hunger than one who does not derive pleasure from the satisfaction of the instinct for food. A woman who wants a child compares the pleasures resulting from the possession of a child, not with the quantities of pain due to pregnancy, birth, nursing, etc., but with her desire for the possession of the child.