Mental life is a series of experiments in adaptation.

会有障碍。会有怀疑者。会有错误。但只要努力，就没有限制。

最重要的事情是愿意质疑一切。

"Every book is a door to another world, a world that exists only in the imagination of the reader."

The difference between a good business and a bad business is that good businesses throw up one easy decision after another. The bad businesses throw up painful decisions time after time.