阅读就是旅行,旅行到其他地方、其他时间、其他思想。
Every challenge is an opportunity in disguise; you just have to look for it.
数算练习告诉我们算术运算的原理,而不是单单的记忆和不断演算。
大萧条是20世纪历史上的一个决定性时刻,理解其原因和后果仍然是经济学家的一项重要任务。
Farmers are the first environmentalists, working with nature every day.
"The real voyage of discovery consists not in seeking new landscapes, but in having new eyes."