To understand the universe, you must understand the language in which it is written, and that language is mathematics.
Political language is designed to make lies sound truthful and murder respectable, and to give an appearance of solidity to pure wind.
Fear of change stifles progress; understanding change directs it.
煤炭的真正价值在于我们如何负责任地开采和使用它。
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
听取他人的意见，但做出自己的决定。