真正的发现之旅不在于寻找新的景观，而在于拥有新的眼光。 

The only limit to our realization of tomorrow is our doubts of today.

You have to understand the local context to operate successfully in global markets.

板块构造理论的美妙之处在于，它用如此简单的理论解释了如此多的现象。

学习正确答案将帮助孩子完成学业，但学会如何学习是为一生做准备。

免费的疫苗比昂贵的治疗更有价值，但更难推广。