The best way to be happy is to live in the present.

I think that in mathematics, and maybe in life, you have to be willing to be a little bit lost.

译文：看遍世间万事，只有钱财会替人说话；看穿人情世故，只让人寒心。赏析：世态炎凉，人情淡薄，钱财和利益能看清一个人的品质。