The truth is rarely pure and never simple.

If you plan on being anything less than you are capable of being, you will probably be unhappy all the days of your life.

生命是一段旋律，让它变得美丽。

"Imagination is the key to unlocking the world."

在数学中，你不理解事物。你只是习惯了它们。

全球性挑战需要全球性解决方案。