“I think you ought to know I'm feeling very depressed.”

“Just believe everything I tell you, and it will all be very, very simple.""Ah, well, I'm not sure I believe that.”

“Sorry, did I say something wrong?" said Marvin, dragging himself on regardless. "Pardon me for breathing, which I never do anyway so I don't know why I bother to say it, oh God I'm so depressed. Here's another one of those self-satisfied doors. Life! Don't talk to me about life.”

“Hey, er ..." said Zaphod, "what's your name?"The man looked at them doubtfully."I don't know. Why, do you think I should have one? It seems very odd togive a bundle of vague sensory perceptions a name.”

“Q: Do you feel concerned that after all this work, people won't treat [Starship Titanic] with the gravity of, say, a movie or a book? That they won't treat it as an art form?D.A.: I hope that's the case, yes. I get very worried about this idea of art. Having been an English literary graduate, I've been trying to avoid the idea of doing art ever since. I think the idea of art kills creativity. ... [I]f somebody wants to come along and say, "Oh, it's art," that's as may be. I don't really mind that much. But I think that's for other people to decide after the fact. It isn't what you should be aiming to do. There's nothing worse than sitting down to write a novel and saying, "Well, okay, I'm going to do something of high artistic worth." ... I think you get most of the most interesting work done in fields where people don't think they're doing art, but merely practicing a craft, and working as good craftsmen. ... I tend to get very suspicious of anything that thinks it's art while it's being created.”

“Simple. I got very bored and depressed, so I went and plugged myself in to its external computer feed. I talked to the computer at great length and explained my view of the Universe to it," said Marvin."And what happened?" pressed Ford."It committed suicide," said Marvin and stalked off back to the Heart of Gold.”

“Well, sir, I think it's just as well that they are being phased out of the war effort, and that we are now going to detonate the supernova bomb. In the very short time since we were released from the time envelope-''Get to the point''The robots aren't enjoying it, sir.''what''The war sir, it seems to be getting them down there's a certain world-weariness.''Well, that's all right, they're meant to be helping to destroy it.''yes, well they're finding it difficult, sir. They are afflicted with a certain lassitude. They're just finding it hard to get behind the job. They lack oomph.''What are you trying to say?''Well, I think they're very depressed about something, sir.''What on Krikkit are you talking about?''Well, in a few skirmishes they've recently, it seems that they go into battle, raise their weapons to fire and suddenly think, why bother? What, cosmically speaking, is it all about? And they just seem to get a little tired and a little grim.''And then what do they do?''Er, quadratic equations mostly, sir. Fiendishly difficult ones by all accounts. And then they sulk.''Sulk?''Yes, sir.''Whoever heard of a robot sulking?''I don't know, sir.”