试错的成本是最低的。
The best songs come from personal experiences.
If you can keep your head when all about you are losing theirs and blaming it on you...
We all live in the wreckage of our ancestors' lives.
I don't care if people doubt me. I believe in myself.
要理解心理学，就要在自然环境中观察行为。
The beauty of mathematics is that it allows us to explore the universe without ever leaving our chairs.