Harry froze in sudden realization just as the forkful of carrots was about to enter his mouth.

That couldn't, couldn't possibly be true, surely no wizard would be stupid enough to do THAT...

And Harry knew, with a dreadful sinking feeling, that of course they would be that stupid. Salazar Slytherin had probably never considered the moral implications of snake intelligence for even one second, just like it hadn't ever occurred to Salazar that Muggleborns were intelligent enough to deserve personhood rights. Most people just didn't see moral issues at all unless someone else was pointing them out...

"Harry?" said Terry from beside him, sounding like he was afraid he would regret asking. "Why are you staring at your fork like that?"

"I'm starting to think magic should be illegal," said Harry. "By the way, have you ever heard any stories about wizards who could speak with plants?"