数学证明的优雅类似于精心设计的算法的美丽。
The elegance of a mathematical proof is akin to the beauty of a well-crafted algorithm.
没有自由就不会有道德。
最好的机会往往出现在市场低迷时期。
Music is a moral law. It gives a soul to the universe, wings to the minds, flight to the imagination, a charm to sadness, gaiety and life to everything. It is the essence of order, and leads to all that is good, just, and beautiful.
至今一切社会的历史都是阶级斗争的历史。