The only way to do great work is to love what you do.

理论是灰色的，而生活之树常青。

The world breaks everyone, and afterward, many are strong at the broken places.

The best science is done with both hands dirty and minds clear.

解释：要紧紧抓住时机不能错过，错过了也不能延误太久。

We cannot be sure of having something to live for unless we are willing to die for it.

过去从未死去，它甚至还未过去。