From Witches Abroad:
It’s a strange thing about determined seekers-after-wisdom that, no matter where they happen to be, they’ll always seek that wisdom which is a long way off. Wisdom is one of the few things that looks bigger the further away it is.*
* Hence, for example, the Way of Mrs Cosmopolite, very popular among young people who live in the hidden valleys above the snowline in the high Ramtops. Disdaining the utterances of their own saffron-clad, prayer-wheel-spinning elders, they occasionally travel all the way to No. 3 Quirm Street in flat and foggy Ankh-Morpork, to seek wisdom at the feet of Mrs Marietta Cosmopolite, a seamstress. No-one knows the reason for this apart from the aforesaid attractiveness of distant wisdom, since they can’t understand a word she says or, more usually, screams at them. Many a bald young monk returns to his high fastness to meditate on the strange mantra vouchsafed to him, such as ‘Push off you!’ and ‘If I see one more of you little orange devils peering in at me he’ll feel the edge of my hand, all right?’ and ‘Why are you buggers all coming round here staring at my feet?’ They have even developed a special branch of martial arts based on their experiences, where they shout incomprehensibly at one another and then hit their opponent with a broom.