过去是知识的巨大源泉，但也是幻觉的巨大源泉。

解释：既要追悔以往的过失，也要预防将来可能发生的错误。

"The fundamental fact about all of us is that we're alive for a while but will die before long. This fact is the real root cause of all our anger and pain."

最糟糕的不平等形式是试图使不平等的事物平等。