The books we read in childhood are the ones that shape our souls.

Sustainability isn't a choice—it's a responsibility we owe to the next generation.

Don't stop when you're tired. Stop when you're done.

Understanding the real lives of the poor is the first step toward designing effective policies to help them.

自由民主的传播伴随着全球文化的传播，这种文化越来越同质化。

It always seems impossible until it's done.

量子理论的本质是否认用经典术语完整描述原子现象的可能性。

即使在热带地区，晚上的气温也比你想象的要凉。打包得暖和一点。