The present is the meeting point of memory and projection.

"Books are the best teachers."

The most important thing is to have a well-thought-out, long-term investment strategy.

General relativity has passed every test we’ve thrown at it, even near a supermassive black hole.

思想之流是保存生命的调整之流。

儿童书籍应该既是一面镜子，也是一扇窗户。