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Mathematics is the queen of the sciences.

The secret of change is to focus all of your energy not on fighting the old, but on building the new.

"The beauty of life is in its unpredictability; it's what makes it worth living."

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

人出生時都是誠實(shí)的，死去時卻都成了騙子。