"Firstly," said Ponder, "Mr Pessimal wants to know what we do here." "Do? We are the premier college of magic!" said Ridcully. "But do we teach?" "Only if no alternative presents itself," said the Dean. "We show 'em where the library is, give 'em a few little chats, and graduate the survivors. If they run into any problems, my door is always metaphorically open." "Metaphorically, sir?" said Ponder. "Yes. But technically, of course, it's locked." "Explain to him that we don't do things, Stibbons," said the Lecturer in Recent Runes. "We are academics."