I always try to do something different, something that challenges me.

量子力学不仅是关于原子的理论，更是关于整个自然的理论。

游戏是儿童的工作。

The evening is the time of day when the light is most beautiful, but it’s also the time when it starts to fade.

气候变化的挑战是我们这个世纪的战斗。