Passion makes idiots of the cleverest men, and makes the biggest idiots clever.
Francois de La RochefoucauldThe cleverest of all, in my opinion, is the man who calls himself a fool at least once a month.
Fyodor DostoevskyPassion often makes a madman of the cleverest man, and renders the greatest fools clever.
Francois de La RochefoucauldHave you noticed that the cleverest people at school are often not the ones who succeed in life?
Paul Arden