Common sense is only a modification of talent. Genius is an exaltation of it. The difference is, therefore, in degree, not nature.
Source: In The Speaker's Electronic Reference Collection, AApex Software, 1994.
-- Edward G Bulwer-Lytton, (May 25 1803-1873), English statesman, poet; He is chiefly remembered as a prolific novelist and his skill in anticipating and satisfying changes in public taste.