客人来了，主人不去招呼，他可能是个不知事理的傻子。

孤独是自我的贫乏；独处是自我的丰富。

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

The present is always an unstable place, the past is where we think we know where we are.