释义：圆的器物容易滚动，而方的器物则易于停止，这是器物的差异；金属刚硬而水则柔弱，这是它们的物性不同。
短期收益永远不应以长期可持续性为代价。
A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
那些沉思地球之美的人会找到持续一生的力量储备。
The work of art is a trace of the eternal.
The future belongs to those who believe in the beauty of their dreams.
One is not struck by the truth until prompted quite accidentally by some external event.