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数学是理性的音乐。
Mathematics is the music of reason.
I'm not here to please everyone; I'm here to be myself.
煤炭是我国的主体能源,在相当长时期内仍将是我国能源安全的基石。
"The only limit to our realization of tomorrow will be our doubts of today."
"There is no substitute for books in the life of a child."