Inventive man has invented nothing -- nothing from scratch. If he has produced a machine that in motion overcomes the law of gravity, he learned the essentials from the observation of birds.
Source: The Courage To Be Happy, 1957.
-- Dorothy Thompson, (Jul 9 1894-1961), US journalist, writer; She was one of the most famous journalists of the 20th century; columnist NY Health Tribune; 1936-41; writer Ladies Home Journal, 1937-1961.