Be a fountain, not a drain. Rex Hudler

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We ourselves feel that what we are doing is just a drop in the ocean. But the ocean would be less because of that missing drop. Mother Teresa

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No man is so poor as to have nothing worth giving: as well might the mountain streamlets say they have nothing to give the sea because they are not rivers. Give what you have. To someone it may be better than you dare to think. Henry Wadsworth Longfellow

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We all have something to give. So if you know how to read, find someone who can't. If you've got a hammer, find a nail. If you're not hungry, not lonely, not in trouble - seek out someone who is. George Herbert Walker Bush

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The world is moved not only by the mighty shoves of the heroes but also by the aggregate of the tiny pushes of each honest worker. Helen Keller

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I have nothing but respect and admiration for honest businessmen. Their contributions to our [American] society are indispensable and almost completely unsung. The entrepreneur who risks everything he has in order to realize a dream - and improve our lives in the process - is engaged in a worthy and honorable pursuit that earns him precious little respect in our society. Ron Paul

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This is the source.

By and large, the best way to be sure you're doing something useful is that somebody's willing to pay you to do it. If you're a doctor, an architect, or a circus clown, your compensation is probably a pretty good measure of your social contribution. Steven Landsburg

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