Those that can heal can harm; those that can cure can kill.

I looked into her eyes, and saw my own staring back, the same peculiar shade, pale grey, flecked with yellow, rimmed with black. Now I knew the nature of her debt. It had weighed on her conscience for fourteen years. I was looking into the eyes of mother and I knew that I would never see her again.

In the town live witches nine: three in worsted, three in rags, and three in velvet fine...

Don't fear tomorrow, till today's done with you.

The flea, though he kill none, he does all the harm he can

The things which harm, educate.