"Does God know he [exists]?" "Of course he does. Otherwise, you could not have asked the question, and I could not have answered."

The only person for whom the house was in any way special was Arthur Dent, and that was only because it happened to be the one he lived in.

He attacked everything in life with a mix of extraordinary genius and naive incompetence, and it was often difficult to tell which was which.

If somebody thinks they're a hedgehog, presumably you just give 'em a mirror and a few pictures of hedgehogs and tell them to sort it out for themselves.

I refuse to answer that question on the grounds that I don't know the answer

Even light, which travels so fast it takes most races thousands of years to realize that it travels at all, takes time to journey between the stars.

I don’t know what I’m looking for.” “What not?” “Because … because … I think it might be because if I knew I wouldn’t be able to look for them.