Full Idea
Man's three fundamental ethical incentives, egoism, malice and compassion, are present in everyone in different and incredibly unequal proportions. In accordance with them, motives will operate on man and actions will ensue.
Gist of Idea
Man's three basic ethical incentives are egoism, malice and compassion
Source
Arthur Schopenhauer (On the Basis of Morality [1841], p.192), quoted by Christopher Janaway - Schopenhauer 7 'Egoism'
Book Reference
Janaway,Christopher: 'Schopenhauer' [OUP 2002], p.98
A Reaction
A well chosen trio. Kant would be shocked that he has left out duty, which is supposed to rise above such feelings.