写作就像在雾中夜间驾驶。你只能看到车灯所及之处，但你可以这样完成整个旅程。
The task of the teacher is to lead the student from the known to the unknown.
"Time is a river that carries us away, but it also leaves behind traces of our existence, like footprints in the sand."
Giving up on assembly language was the apple in our Garden of Eden: Languages whose use squanders machine cycles are sinful. The LISP machine now permits LISP programmers to abandon bra and fig-leaf.