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True happiness comes from within, not from external achievements or possessions.
在科学中,我们试图解释我们不理解的事物。在数学中,我们试图理解我们无法解释的事物。
I'm not a big fan of the word 'celebrity'. I think it's a very strange concept.
Success is not final, failure is not fatal: It is the courage to continue that counts.