Curiously enough, the dolphins had long known of the impending destruction of the planet Earth and had made attempts to alert mankind to the danger; … - Douglas Adams

I'm so great even I get tongue-tied talking to myself.

Nothing travels faster than the speed of light, with the possible exception of bad news, which obeys its own special laws.

"What really is the point of trying to teach anything to anybody?"
This question seemed to provoke a murmur of sympathetic approval from up and down the table. Richard continued, "What I mean is that if you really want to understand something, the best way is to try and explain it to someone else. That forces you to sort it out in your mind. And the more slow and dim-witted your pupil, the more you have to break things down into more and more simple ideas. And that's really the essence of programming. By the time you've sorted out a complicated idea into little steps that even a stupid machine can deal with, you've learned something about it yourself."