Whatever the reason -- whether Hitler thought he might get away with what he had got without fighting for it, or whether it was that after all the preparations were not sufficiently complete -- however, one thing is certain, he missed the bus.
Source: Speech to Conservative and Unionist Associations, 4 Apr. 1940
-- Neville Chamberlain, (Mar 18 1869-1940), English political leader; He was the conservative prime minister, 1937-40, who sought peace in our time through appeasement of Hitler.