Combinatorics is the art of counting without counting.
组合数学是不用计数的计数艺术。
To be happy is only to have freed one's soul from the unrest of unhappiness.
艺术是认识世界的一种方式。
Profitability and environmental responsibility are not mutually exclusive—they go hand in hand when done right.
物理学的美丽在于它能够揭示宇宙表面复杂性之下的深刻简单性。