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To be Irish is to know that in the end, the world will break your heart.

A healthy body is the foundation of a high-performing brain.

Do not use power to suppress opinions you think pernicious, for if you do the opinions will suppress you.

"In the end, we will remember not the words of our enemies, but the silence of our friends."

You have to be passionate about what you do, otherwise it's not worth it.

解析：世間萬(wàn)物都是相對(duì)而生，相互依存，體現(xiàn)了老子的辯證思想。