"Finally, from so little sleeping and so much reading, his brain dried up and he went completely out of his mind.” (Miguel de Cervantes Saavedra, Don Quixote)
Always stay humble
I. 174
Conceit and haughtiness are perilous during times of good fortune. One must redouble efforts to maintain a sense of humility. Those who revel when times are good will wither in adversity.