数学是关于概念之间关系的科学,与这些概念的内容无关。
对煤炭的战争就是对美国工人的战争。
Love isn't about when you first meet. It's about the many, many years you spend together, when you're trying to keep that flame burning.
Every tree planted today is a legacy for tomorrow's generations.
We don't compete with anyone but ourselves to be the best we can be.