It was this desire, rather than pure altruism, that led him to his own take on philanthropy.

They've argued that there is no such thing as "pure altruism."

Not pure altruism, it is self interest, which, in fact, is your lever.

Self-awareness means that human beings are, in fact, capable of engaging pure altruism.

Suppose I had never wished to take any money at all, but had set out in pure altruism to serve the people.

But few people sign on out of pure altruism.

Not that it was all pure altruism, of course.

"And you're complaining to me about my spending too much time on pure altruism."

Similarly, many different motives came into play, ranging from political manipulation to the purest altruism.

"You always have to ask, is it pure altruism or an attempt for some new kind of warm glow?"