【释义】:礼节重在相互回应。送出礼遇而对方不回应,这是不合礼数的;接受了别人的礼遇却不回报,同样也是不符合礼的要求。
21世纪被一种压倒性的有限性和疲惫感所压迫。
地球形状的问题本质上是势理论中的一个问题。
Innovation is seeing what everybody has seen and thinking what nobody has thought.
Two roads diverged in a wood, and I—I took the one less traveled by, And that has made all the difference.