A man's real possession is his memory. In nothing else is he rich, in nothing else is he poor.
人越老,就越喜欢不正经的东西。
Stories you read when you're the right age never quite leave you. You may forget who wrote them or what the story was called. Sometimes you'll forget precisely what happened, but if a story touches you it will stay with you, haunting the places in your mind that you rarely ever visit.
The most important thing in mathematics is to ask the right questions.