The reason I use ed is that I don't want to lose what's on the screen.
You can drive a car by looking in the rear view mirror as long as nothing is ahead of you. Not enough software professionals are engaged in forward thinking.
Operating systems are like underwear — nobody really wants to look at them.
I got tired of people complaining that it was too hard to use UNIX because the editor was too complicated.
I think one of the interesting things is that vi is really a mode-based editor.
Sometimes the easiest way to get something done is to be a little naive about it.