The story of human evolution is a story of migration and mixing.
我从不买任何东西,除非我能给出一个充分的理由,说明为什么我认为它会涨。
"The quantum world is not just a smaller version of the classical world; it operates under entirely different rules."
A man is rich in proportion to the number of things which he can afford to let alone. That man is the richest whose pleasures are the cheapest.