There is no easy walk to freedom anywhere, and many of us will have to pass through the valley of the shadow of death again and again before we reach the mountaintop of our desires.

互联网是一个伟大的平衡器，但它也有可能加剧不平等。

The study of mathematics is the indispensable basis for all intellectual and spiritual progress.

"The present is always invisible because it's environmental and we're fish."