1627  Man needs his difficulties because they are necessary to enjoy success,
1882  Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.
2027  You must not lose the faith in Humanity. Humanity is an ocean, if the few drops of ocean are dirty, the ocean does not become dirty....
2631  Intelligence is in the head, not in the age
3891  “You educate a man; you educate a man. You educate a woman; you educate a generation.”