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The challenge is to make the invisible visible.

要理解心靈，就跟隨它的實際后果。

The secret of success is learning how to use pain and pleasure instead of having pain and pleasure use you. If you do that, you’re in control of your life. If you don’t, life controls you.

Program testing can be used to show the presence of bugs, but never to show their absence!

Gratitude is an antidote to negative emotions, a neutralizer of envy, hostility, worry, and irritation.

無論當下有什么，接受它，就好像你選擇了它。