数学的目标不是解决问题,而是理解问题。
The goal of mathematics is not to solve problems, but to understand them.
Language is a skin: I rub my language against the other. It is as if I had words instead of fingers, or fingers at the tips of my words.
但是,假如你驯服了我,我们就彼此需要了。对我而言,你就是举世无双的;对你而言,我也是独一无二的……
能源的未来不是要在煤炭和可再生能源之间做出选择,而是找到正确的平衡。