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The customer may not always be right, but they always come first.

Don’t take it personally when someone turns you down. Assume they are like you: busy， occupied， distracted. Try again later. It’s amazing how often a second try works.

The power of mathematics comes from its ability to abstract and generalize, turning specific problems into universal truths.

The only way to make sense out of change is to plunge into it, move with it, and join the dance.

The universe is a vast and complex system, and understanding it requires both theoretical insights and observational evidence.