生活中唯一的限制是你自己设定的。
The only limits in life are the ones you make.
The way to learn about the mind is to reverse-engineer it: to figure out what natural selection designed it to accomplish.
幸福不是现成的,它来自于你自己的行动。
You may not realize it when it happens, but a kick in the teeth may be the best thing in the world for you.