I've never forgotten for long at a time that living is struggle. I know that every good and excellent thing in the world stands moment by moment on the razor-edge of danger and must be fought for -- whether it's a field, or a home, or a country.
Source: Antrobus, in The Skin of Our Teeth, act 3.
-- Thornton Wilder, (Apr 17 1897-1975), US playwright, novelist; He is well known for his plays Our Town, 1938 and The Skin of Our Teeth, 1942.