Ofterdingen and Kropotkin

The philosopher is alone in the universe...If he be thoughtful, or caresses another for a moment, it is but in straight connection with the profit he thinks to draw from the business. When no longer in need of others, when he can forcefully assert his empire he abjures forever these pretty humanitarian doctrines of doing good deeds to which he only submitted himself to for reasons of policy.
de Sade, Justine, 608.