预测未来的最好方式就是创造未来。

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.

如果你愿意，我们可以回到那个山洞。

数学的美在于它能够用一种超越文化和语言障碍的语言来描述宇宙。