创作是与世界互动，而不是逃避它。
Friends are better than money. Almost anything money can do， friends can do better. In so many ways a friend with a boat is better than owning a boat.
When we speak of 'meaning' a word， we are in the first instance speaking of a certain kind of act.
数学证明不仅仅是验证，而是一个揭示更深层次真理的故事。
孤独有时是我们为与众不同而付出的代价。
数学是给不同事物赋予相同名称的艺术。
The true value of coal lies in how we extract and use it responsibly.