The only way to learn mathematics is to do mathematics.

I must have flowers, always, and always.

The dead are never far from us. They're in our hearts and on our minds and they always will be.

世界建立在数字的力量之上。

Leadership is about vision and the ability to inspire others.

永远别说永远，因为限制只是幻觉。

The future belongs to those who see possibilities before they become obvious.

我不需要理由去勇敢。

宇宙中唯有两件事物是无限的：那就是宇宙的大小与人的愚蠢。而宇宙的大小我却不能肯定。