The lure of happiness and the fear of pain . . . are the two forces which have through untold millenniums kept what we usually call life from destruction by the ever encroaching outside forces of destruction.
Source: In The Great Thoughts, by George Seldes, 1985.
-- Luther Burbank, (Mar 7 1849-1926), US naturalist, plant breeder; He contributed to the study of genetics by breeding many useful varieties of fruits, vegetables and grains.