"The world is a place of suffering, and the only way to escape it is through love."

The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.

我们必须自由，不是因为我们宣称自由，而是因为我们践行自由。

The world is full of small kindnesses, if you know where to look.

I think that the role of the mathematician is to discover these patterns and to explain them.

韧性不在于避免失败，而在于学会每次跌倒后重新站起。