The truth is, I don't know what I would have done without mathematics.
事实上，我不知道如果没有数学我会做什么。
水是生命之源，也是毁灭之力。
Land is a peculiar commodity, which is different from all others, and the quantity of it is always fixed and limited.
The true measure of our success is how well we feed the world while preserving its resources.
你无法仅靠站着凝视水面就能穿越海洋。