Identity is a fragile thing, easily lost and hard to regain.

But man is not made for defeat.A man can be destroyed but not defeated.

The only reason people want to be masters of the future is to change the past.

理解免疫系统就是理解解锁新癌症疗法的关键。

Challenges are opportunities in disguise; embrace them with courage.

质量不是一种行为，而是一种习惯。