“We must be something in order to do something, but we must also do something in order to be something. The best rule, I think, is this: If we find it hard to do good, then let us try to be good. If, on the other hand, we find it hard to be good, then let us try to do good. Being leads to doing, doing leads to being. Yet below both as their common root is faith, — faith in God, in man, in ourselves, in the eternal superiority of right over wrong, truth over error, good over evil, love over all selfishness and all sin.”

Quoted in Thoughts (1901) by Jessie K. Freeman and Sarah S. B. Yule, p. 83, and in Collect Writings of Russell H. Conwell (1925), Vol. 1, p. 396
Context: Doing nothing for others is the undoing of ourselves. We must purposely be kind and generous, or we miss the best part of existence. The heart which goes out of itself gets large and full. This is the great secret of the inner life. We do ourselves the most good doing something for others.

Source: Succeeding in Science: Some Rules of Thumb (1993)
Context: Never do anything that bores you. My experience in science is that someone is always telling to do something that leaves you flat. Bad idea. I'm not good enough to do something I dislike. In fact, I find it hard enough to do something that I like. … Constantly exposing your ideas to informed criticism is very important, and I would venture to say that one reason both of our chief competitors failed to reach the Double Helix before us was that each was effectively very isolated.

As quoted in "Kate Bush Speaks" by Owen Myers in Fader (23 November 2016) https://www.thefader.com/2016/11/23/kate-bush-interview-before-the-dawn

Source: Goliath

Source: Ender's Game

In response to CNN reporter, Chabad.org http://www.chabad.org/therebbe/livingtorah/player_cdo/aid/490071/jewish/Acts-of-Goodness-and-Kindness.htm

Source: We Should All Be Feminists

Source: A New Earth: Awakening to Your Life's Purpose

Source: Immortal Beloved