Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH', the paint wouldn't even have time to dry.
I ain’t against gods and goddesses, in their place. But they’ve got to be the ones we make ourselves. Then we can take ’em to bits for the parts when we don’t need ’em anymore, see?
God does not play dice with the universe; He plays an ineffable game of His own devising, which might be compared, from the perspective of any of the other players [i.e. everybody], to being involved in an obscure and complex variant of poker in a pitch-dark room, with blank cards, for infinite stakes, with a Dealer who won't tell you the rules, and who smiles all the time.
Death was standing behind a lectern, poring over a map. He looked at Mort as if he wasn’t entirely there. Yᴏᴜ ʜᴀᴠᴇɴ'ᴛ ʜᴇᴀʀᴅ ᴏғ ᴛʜᴇ Bᴀʏ Oғ Mᴀɴᴛᴇ, ʜᴀᴠᴇ ʏᴏᴜ? he said. “No, sir,” said Mort. Fᴀᴍᴏᴜs sʜɪᴘᴡʀᴇᴄᴋ ᴛʜᴇʀᴇ. “Was there?” Tʜᴇʀᴇ ᴡɪʟʟ ʙᴇ, said Death, ɪғ I ᴄᴀɴ ғɪɴᴅ ᴛʜᴇ ᴅᴀᴍɴ ᴘʟᴀᴄᴇ.
Aziraphale collected books. If he were totally honest with himself he would have to have admitted that his bookshop was simply somewhere to store them. He was not unusual in this. In order to maintain his cover as a typical second-hand book seller, he used every means short of actual physical violence to prevent customers from making a purchase. Unpleasant damp smells, glowering looks, erratic opening hours - he was incredibly good at it.
The three rules of the Librarians of Time and Space are: 1) Silence; 2) Books must be returned no later than the last date shown; and 3) Do not interfere with the nature of causality.