I'm the reason your past won't go.

The world is a book, and those who do not travel read only a page.

Psychology must be a science of observation, not speculation.

我们今天种植的每一棵树都是对明天清洁空气、稳定气候和繁荣生态系统的投资。

The past is never dead. It's not even past.

To write is to descend into the abyss of oneself.

In the quest to understand quantum gravity, we are like children playing on the shore of a vast ocean, occasionally finding a smooth pebble or a pretty shell, while the great ocean of truth lies undiscovered before us.