The universe would look to a two-dimensional creature who spend its life moving on the service of what turned out to be a globe， it could travel for millions of years and would always return to its starting point， it would never be conscious of what was above it or beneath it.

I always like to look on the optimistic side of life, but I am realistic enough to know life is a complex matter.

I don’t like to be forgotten. I like to be remembered.

真正的科学进步需要创造力和纪律性。

物理学中的每一个发现都是向理解宇宙宏伟设计迈出的一步。

作家必须是历史的见证者，即使历史忽视他。