在计算中，不变量是短暂的。

"You have to be paranoid to survive."

所有严肃的艺术都试图理解这个世界。

I'm just a kid from Canada who had a dream.

I think that the best films are those that are not easily categorized.

Understanding the real lives of the poor is the first step toward designing effective policies to help them.

有时我会感到，我伸展开来覆盖大地、延伸进万物：我感到自己生活在每一棵树木中、生活在浪花中、生活在往来无定的云朵和动物中、生活在季节的轮回中。

We don't inherit the earth from our ancestors; we borrow it from our children—this is especially true in forestry.