疲惫不是身体的罢工，而是心理能量的收支失衡。
A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
The poetry of architecture lies in its ability to frame life.
最好的技术是无形的。它运作得如此之好，以至于你甚至不会注意到它。