Walter Savage Landor Quote

Be assured that, although men of eminent genius have been guilty of all other vices, none worthy of more than a secondary name has ever been a gamester. Either an excess of avarice or a deficiency of what, in physics, is called excitability, is the cause of it; neither of which can exist in the same bosom with genius, with patriotism, or with virtue.

Imaginary Conversations of Literary Men and Statesmen (ed. 1824)