Courtesy costs nothing. Lower the toilet seat after use. Let the people in the elevator exit before you enter. Return shopping carts to their designated areas. When you borrow something， return it better shape (filled up， cleaned) than when you got it.

The detection of gravitational waves has opened a new window to observe the universe.

我们有时候专注于消失中的机会太久，以致于太晚发现开启的机会。

最小作用量原理是物理学的一个统一原理。

The key to success is to focus on the long term and not get distracted by short-term fluctuations.

The love of a teacher is like drops of dew, which can revive even a withered soul; the love of a teacher is like a warm spring breeze, which can melt even frozen emotions.

It's waiting that helps you as an investor and a lot of people just can't stand to wait.If you didn't get the deferred -gratification gene, you've got to work very hard to overcome that.

人比自己想象的更需要他人。