教育与收入之间的关系是复杂的，并且在不同背景下有所不同。

人生是一段旅程，每一步都很重要。

Politics is almost as exciting as war, and quite as dangerous. In war you can only be killed once, but in politics many times.

Sustainability in agriculture is not an option—it's a necessity for future generations.

有时候当狗还真难。