我明白你无法控制一切，但你可以控制自己的反应。

函数的概念在数学中是基础的，而λ演算提供了一种形式化这一概念的方法。

The health of our oceans is the health of our planet.

The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale, and pays the freight both ways.

实现明天的唯一限制将是我们今天的疑虑。