Symmetry is not just a property of nature; it is a guiding principle in the search for physical laws.
对称性不仅是自然的一种属性，而且是寻找物理定律的指导原则。
最终，我们只有我们告诉自己的故事。
"The past is a country we can never return to, but whose borders we are always crossing."
It is far harder to kill a phantom than a reality.
If at first the idea is not absurd, then there will be no hope for it.
可持续性不仅仅是保护环境，更是创造一个对所有人都有利的系统。