Terry Pratchett. The Colour Of Magic (№ 413336)

He knew perfectly well that in magic he was zero without a wand, and he was not at all worried about the fact that the mere appearance of a hero at the city gates was enough for retorts to burst all over the Wizard Quarter and demons materialized. No, what he didn’t like about the characters was their habit of being suicidal when sober and violently violent when drunk. Besides, there were too many heroes. In some of the most celebrated and exploitative territories, there was real pandemonium at the height of the season. There was talk that it was time to post the timetable for the heroes' appearance at the place where the feat was accomplished.