I think all cats are wild. They only act tame if there´s a saucer of milk in it for them.

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.

"I think we have different value systems." "Well, mine's better."

I always thought something was fundamentally wrong with the universe

This planet has - or rather had - a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.

A theory of the universe that states: If anyone finds out what the universe is for, it will disappear and be replaced by something more bizarrely inexplicable.

As a result of all this hardship, dirt, thirst, and wombats, you would expect Australians to be a dour lot. Instead, they are genial, jolly, cheerful, and always willing to share a kind word with a stranger, unless they are an American.