"I mean it, actually. 'Oh, yes, I met a 'wizard' once,'" he says, making his voice lighter, more normal, with some effort, "'he spelled it with two zeds and had a wand with stars on. So go on, pull the other one, it has got bells on. If that's a wizard, well. And if there were any real ones, they wouldn't allow something like that to walk about freely. So clearly there aren't.'" He reconsiders about giving his bread away and takes a bite with an air of having said all that needs saying.
"Basic Herbology, gentlemen," he murmurs, back in his own voice. "If it's the leaves that are wanted, leave some on to let it draw in the sun and keep growing, and don't pull the plant up by the roots, or there'll be none for next spring."