That's what you people never understand," said Rincewind, wearily. "You think magic is just something you can pick up and use like a, a -"<br /><br />"Parsnip?" said Nijel.<br /><br />"Wine Bottle?" said the Seriph.<br /><br />"Something like that," said Rincewind cautiously, but rallied somewhat and went on, "But the truth is, is -"<br /><br />"Not like that?"<br /><br />"More like a wine bottle?" said the Seriph hopefully.<br /><br />"Magic uses people," said Rincewind hurriedly. "It affects you as much as you affect it, sort of thing. You can't mess around with magical things without it affecting you. I just thought I'd better warn you."<br /><br />"Like a wine bottle," said Creosote, "that -"<br /><br />"- drinks you back," said Rincewind.