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"The joy of reading is discovering that you are not alone."
The development of formal systems has revolutionized our understanding of mathematics.
"What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better."
A well-managed forest is a gift that keeps giving.
安全不仅仅是一项政策,它是必须融入我们每项操作的文化。
对认知的研究需要经验方法和理论方法的结合。