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Liberty means responsibility. That is why most men dread it.
自由意味着责任,因此许多人害怕自由。
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
I learned early on that the world could be cruel, but I refused to let it break me.
挑战是伪装的机会。拥抱它们,让自己变得更强大。