The progress of science is not a straight line but a spiral, always advancing and always returning to the starting point.
科学的进步不是一条直线，而是一个螺旋，总是在前进，又总是回到起点。
The competent programmer is fully aware of the strictly limited size of his own skull; therefore he approaches the programming task in full humility, and among other things he avoids clever tricks like the plague.
The only thing I fear is God.