NP-completeness is not just a theoretical curiosity; it has profound implications for practical computing.
史记
The Internet is a network of networks, governed by the principle of interoperability.
数学证明的美在于它的简洁性和必然性。
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
比光速更快的问题在于你只能生活在黑暗中。