我不是说唱歌手，我是一个改变世界的人。
I'm not a rapper, I'm a world changer.
A tranquil mind is the source of health.
In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.
Remembering that you are going to die is the best way I know to avoid the trap of thinking you have something to lose.