"My research offers impressive evidence that we feel better when we attempt to make our world better...to have a purpose beyond one's self lends to existence a meaning and direction - the most important characteristic of high well-being."

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One of the characteristics of successful scientists is having courage. Once you get your courage up and believe that you can do important problems, then you can. If you think you can't, almost surely you are not going to.

— Richard Hamming