In times of change, the learners inherit the earth, while the learned find themselves beautifully equipped to deal with a world that no longer exists.
伟大不是被给予的,而是赢得的。
I'm not the next Usain Bolt, I'm the first Usain Bolt.
There are no second acts in American lives.
Happiness is not something you postpone for the future; it is something you design for the present.