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The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

You are not the opinion of someone who doesn't know you.

Success is not about how much money you make, it’s about the difference you make in people’s lives.

學(xué)習(xí)的魅力主要在于心靈在獲取知識時體驗到的滿足感。