Life is 10% what happens to you and 90% how you react to it.
一棵树的真正价值是用几十年衡量的,而不是美元。
写作是一种勇气的行为。
A good book should leave you slightly exhausted at the end. You live several lives while reading it.
A mathematician's work is never done; there are always new questions to ask and new mysteries to solve.