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The only way to learn mathematics is to do mathematics.

"The human voice is the most powerful instrument of all."

現(xiàn)在是一個轉(zhuǎn)瞬即逝的時刻，而過去是永恒的。

機械是我們這個時代的偉大文明推動者。

Innovation in physics often comes from looking at old problems in new ways.

I'm alive and I have a chance to do something with my life. That's the only motivation I need.

當(dāng)我們談?wù)撘粋€詞的“意義”時，首先我們在談?wù)撘环N特定的行為。