Pain is temporary. It may last a minute, or an hour, or a day, or a year, but eventually it will subside and something else will take its place. If I quit, however, it lasts forever.

Psychological theories must pass the test of practical experience.

没有道德或不道德的书，只有写得好或写得差的书。

忧心生时，你即受其所役。

Every ending is a new beginning.

真正的智慧并非在于避免所有的错误，而是在于从错误中快速学习和成长。