The best preparation for tomorrow is doing your best today.
若你把今天所做的事情再重复365次，明年你会成为你想成为的人么？
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 most important thing is that you have a North Star. You have to know where you're going.