Never demand of another that which would constitute his sacrifice to you. Never grant that which would… — Ayn Rand

The actions of all group leaders throughout history have had one common element: altruism - common good of the collective. Religious leaders and the "moral" majority condemn the likes of Hitler, Stalin, etc. but their movements and foundations are alike.

Never initiate the use of force against another man. Never let his use of force against you remain unanswered by force.

Selfishness does not mean only to do things for one's self. One may do things, affecting others, for his own pleasure and benefit. This is not immoral, but the highest of morality.