There was one planet off in the seventh dimension that got used as a ball in a game of intergalactic bar billiards. Got potted straight into a black … - Douglas Adams

Believe me, it is a great deal better to find cast-iron proof that you're innocent than to languish in a cell hoping that the police — -who already think you're guilty — -will find it for you.

One of the major difficulties Trillian experienced in her relationship with Zaphod was learning to distinguish between him pretending to be stupid just to get people off their guard, pretending to be stupid because he couldn't be bothered to think and wanted someone else to do it for him, pretending to be outrageously stupid to hide the fact that he actually didn’t understand what was going on, and really being genuinely stupid. He was renowned for being amazingly clever and quite clearly was so — but not all the time, which obviously worried him, hence, the act. He preferred people to be puzzled rather than contemptuous.

What was the Sherlock Holmes principle? 'Once you have discounted the impossible, then whatever remains, however improbable, must be the truth.'
I reject that entirely. The impossible often has a kind of integrity to it which the merely improbable lacks. How often have you been presented with an apparently rational explanation of something that works in all respects other than one, which is just that it is hopelessly improbable? Your instinct is to say 'Yes, but he or she simply wouldn't do that.'