Creativity takes courage.

Sustainability is not just a trend, it's a responsibility we owe to future generations.

解决困难要在它还容易解决的时候下手，消除罪恶要在它还处于微小的时候进行。不要夸耀自己的善行以免助长祸乱，执法时不要手持刑具却犹豫不决。

最优雅的证明是那些清晰地揭示问题本质的证明。

I fell asleep reading a dull book and dreamed I kept on reading, so I awoke from sheer boredom.

世界上充满了门，每一扇门都是一个选择。