The validity of an idea or action is determined not by whether it is widely believed or widely reviled but by whether it obeys the rules of logic. It is not because an argument is denounced by a majority that it is wrong nor, for those drawn to heroic defiance, that it is right.

Alain de Botton (b. 1969) Swiss-British author

The Consolations of Philosophy, ch. 1 “Consolation for Unpopularity” (2000)