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有權勢的天子，也未必尊貴；窮苦的平民，也未必低賤。貴賤的分別，在于行為的美惡。

I’ve learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel.

If you want to be the best, you have to do things that other people aren't willing to do.

心理學必須展示心靈如何服務于有機體的需求。

The despotism of custom is everywhere the standing hindrance to human advancement.