David Viscott (1938–1996) psiquiatra estadounidense
Original: «The purpose of life is to discover your gift. The work of life is to develop it. The meaning of life is to give your gift away. I know I have a purpose. I believe in my gift. I am here to give. When I am in doubt, I give more».
Fuente: Finding Your Strength in Difficult Times. David Viscott. Editorial McGraw Hill Professional, 2003. ISBN 9780071436397. Página 87.