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Freedom is not the power to do what we want， but the right to do what we ought.

"Books are the keys to unlocking our understanding of others."

The pursuit of knowledge is more valuable than the knowledge itself.

"I always believe if you’re stuck in a hole and maybe things aren’t going well you will come out stronger."

"Even if the world changes, I won’t change."

Your time is limited, so don't waste it living someone else's life.