Terry Pratchett said this quote

“ She never sent the castle to sleep”, said Granny, “that’s just an old wife’s tale. She just stirred up time a little. It’s not as hard as people think, everyone does it all the time. It’s like rubber, is time, you can stretch it to suit yourself.”Magrat was about to say: That’s not right, time is time, every second lasts a second, that’s its job. The she recalled weeks that had flown past and afternoons that had lasted forever. Some minutes had lasted hours, some hours had gone past so quickly she hadn’t been aware they’d gone past at all.“But that’s just people’s perception, isn’t it?”“Oh yes”, said Granny, “of course it is, it all is, what difference does that make? ”