He can say to himself, "Somewhere, my flower is there…" But if the sheep eats the flower, in one moment all his stars will be darkened… And you think that is not important!

In the end, we only regret the chances we didn't take.

拖延乃光阴之窃贼。

你越是赞美和庆祝你的生活，生活中就有越多值得庆祝的事情。

数学中最深刻的洞见往往来自意想不到的类比。

抑制和引导本能冲动，使其可用于更高的文化活动，是文明的基本力量。