I am not what I am.
The only limits you have are the limits you believe.
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.
The secret of joy in work is contained in one word – excellence. To know how to do something well is to enjoy it.
平凡与非凡的区别就在于那一点额外的努力。