1656  Man needs his difficulties because they are necessary to enjoy success,

1922  Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.

2081  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....

2356  The indispensable first step to getting the things you want out of life is this: decide what you want.

2191  There is never enough time to do everything, but there is always enough time to do the most important thing.