And now too late, we see these things are one:
The art is sacrifice and self-control
And who loves beauty must be stern of soul.
Source: An American to France, in Welcome Home, 1928.
-- Alice Duer Miller, (Jul 28 1874-1942), US poet, author; She is best remembered for White Cliffs, 1941, a long narrative poem extolling Britain's resistance during WW II; also wrote I Have Loved England.