The joy of solving a mathematical problem is unparalleled; it is a moment of pure intellectual triumph.
To read is to travel, to travel to other places, to other times, to other minds.
Books say: She did this because. Life says: She did this. Books are where things are explained to you; life is where things aren't.
我們必須投資未來,而不僅僅是開發(fā)現(xiàn)在。