Time is a concept that humans have created to make sense of the universe, but the universe itself is timeless.

可持续性不是一种趋势；这是我们对后代的责任。

"There is no substitute for books in the life of a child."

所以,储备是国家最重要的事；粮食是国家的宝物；武器是国家的利爪；城池是守卫国家的屏障。

The key to innovation in economics is to question conventional wisdom.

Every book is a journey, and every journey changes us.

嫉妒是灵魂的肿瘤。