“He was a person who could bring out the best in others. There are some leaders who bring out the worst in others. He brought out the best.”

The Open Mind interview (1985)
Context: What is … important is that we — number one: Learn to live with each other. Number two: try to bring out the best in each other. The best from the best, and the best from those who, perhaps, might not have the same endowment. And so this bespeaks an entirely different philosophy — a different way of life — a different kind of relationship — where the object is not to put down the other, but to raise up the other.

Quoted in Questions & Answers, Share International https://www.share-international.org/magazine/old_issues/2018/2018-10.htm#q-n-a (October 2018)
Share International Magazine

Academy of Achievement interview (1991)
Context: The idea of being constructive, creative, positive, in trying to bring out the best in one's own self and the best in others follows from what I've just been saying. Again, I repeat my belief in us, in ourselves, as the product of the process of evolution, and part of the process itself. I think of evolution as an error-making and error-correcting process, and we are constantly learning from experience. It's the need to dedicate one's self in that way, to one's own self, and to choose an activity or life that is of value not only to yourself but to others as well.

Source: The Witch Of Portobello

Finding Our Way: Leadership For an Uncertain Time (2005)

Source: Good to Great, 2001, p. 46

Plato, Phaedo

Will Warburton (1905), ch. 3