，乐而不淫，哀而不伤。《论语》
《关睢》这首诗，快乐而不过分，哀婉而不伤恸。
理论计算机科学是一个领域，其中深刻的数学见解导致了实用的计算工具。
对我们是什么的批评，同时是对强加于我们的限制的历史分析，也是对超越这些限制的可能性的实验。
"Humor is the great thing, the saving thing. The minute it crops up, all our irritations and resentments slip away and a sunny spirit takes their place."
【译文】君子不会根据言论推举选拔人才，也不会因为某人有缺点错误而废弃他的言论。
The sun himself is weak when he first rises, and gathers strength and courage as the day gets on.
Sustainability is not an option; it's a necessity for long-term success.