1045  Man needs his difficulties because they are necessary to enjoy success,
1169  Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.
1171  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....
1677  True morality consists, not in following the beaten track, but in finding a new path for ourselves and in fearlessly following it.
1603  There is never enough time to do everything, but there is always enough time to do the most important thing.