The goal of economics is to understand how to allocate scarce resources in the most efficient way possible.

国际政治是一项残酷而危险的事务，而且很可能继续保持这种状态。

Women in science don't need role models; we need equal opportunities.

The boundaries between species are more porous than we think.

我是一个斗士，我相信不可能的事。