An optimist is a person who sees a green light everywhere, while a pessimist sees only the red stoplight. . . The truly wise person is color-blind.
Source: archy and mehitabel [tr. certain maxims of archy], 1927.
-- Albert Schweitzer, (Jan 14 1875-1965), French theologian, musician, medical missionary; He was a brilliant scholar who became a missionary doctor to Africa; he won the 1952 Nobel Peace Prize.