 However, many moral philosophers—contractualists included—seek a more moderate moral theory. If contractualism is to avoid being extremely demanding, the challenge is to stop short of the stringent principle. We need to find a principle that allows me to choose my own lesser good over a (significantly) greater good for someone else—and then to show that this principle cannot be reasonably rejected. For instance, suppose I spend my spare evening (and spare income) going to the movies rather than donating the time and money to a charity which could thus have saved someone’s life. We need an explanation of why those who die as a result cannot reasonably reject the principle that permits this behaviour.