“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.”

“Wow,' said Zaphod Beeblebrox to the Heart of Gold. There wasn't much else he could say.He said it again because he knew it would annoy the press. 'Wow.'The crowd turned their faces back toward him expectantly. He winked at Trillian, who raised her eyebrows and widened her eyes at him. She knew what he was about to say and thought him a terrible show-off.'That is really amazing.' he said. 'That really is truly amazing. That is so amazingly amazing I think I'd like to steal it.'A marvelous presidential quote, absolutely true to form. The crowd laughed appreciativley, the newsman gleefully punched buttons on their Sub-Etha News-Matics and the President grinned. As he grinned his heart screamed unbearably and he fingered the small Paralyso-Matic bomb that nestled quietly in his pocket. Finally he could bear it no more. He lifted his heads up to the sky, let out a wild whoop in major thirds, threw the bomb to the ground and ran forward through the sea of suddenly frozen beaming smiles.”

“Rob McKenna was a miserable bastard and he knew it because he'd had a lot of people point it out to him over the years and he saw no reason to disagree with them except the obvious one which was that he liked disagreeing with people, particularly people he disliked, which included, at the last count, everybody.”

“Just supposing," he said, "just supposing" --he didn't know what was coming next, so he thought he'd just sit back and listen--"that there was some extraordinary way in which you were very important to me, and that, though you didn't know it, I was very important to you, but it all went for nothing because we only had five miles and I was a stupid idiot at knowing how to say something very important to someone I've only just met and not crash into lorries a the same time, what would you say..." He paused, helplessly, and looked at her."I should do.”

“It startled him even more when just after he was awarded the Galactic Institute's Prize for Extreme Cleverness he got lynched by a rampaging mob of respectable physicists who had finally realized that the one thing they really couldn't stand was a smartass.”

“If there are no stupid questions, then what kind of questions do stupid people ask? Do they get smart just in time to ask questions?”

“Yes, it is true that sometimes unusually intelligent and sensitive children can appear to be stupid. But stupid children can sometimes appear to be stupid as well. I think that's something you might have to consider.”