每个人都是自己最大的敌人，仿佛是自己的凶手。
Every man is his own greatest enemy， and as it were his own murderer.
Language is the only tool we have to make sense of the world, and yet it is always inadequate.
The end is in the beginning and yet you go on.
The present is always changing, but the past is fixed.
We are what we pretend to be, so we must be careful about what we pretend to be.
Fame is vapor; popularity an accident; the only earthly certainty is oblivion.
物理学的美丽在于它能够用几个简单的原理解释宇宙。
The road of excess leads to the palace of wisdom.