The cleverest of all, in my opinion, is the man who calls himself a fool at least once a month.
Source: Ivan Ivanovich, in Bobok, in A Writer's Diary, 1873.
-- Fyodor Dostoyevsky, (Nov 11 1821-1881), Russian novelist; He was noted for his powerful realistic novels of psychology, e.g., Crime and Punishment, 1866; The Idiot, 1869.