No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.

"I believe children's books should be beautiful objects, treasured and revisited."

预测未来的最好方法就是创造未来。

The true cost of oil isn't just the price per barrel—it's the environmental and social impact.

数学是一种让我们能够描述无法描述的事物的语言。