I'm trying to write an op/ed piece for the local paper and I want to use that quote (I may be getting it slightly wrong) - something about, "Cruelty is a failure of imagination."

Does anyone know the exact quote, and who said it? I've googled cruelty + imagination + quote and got a quote site, but though it had good stuff on "imagination" it had nothing on "cruelty" - hence didn't have the quote I seek. And I started with my Oxford UP Dic of Quotes - no luck there either.

Help help! Please Help!

Edit: Um....Was this the right place to post this? Not sure....(mumble mumble)....Perhaps I'll post it in Misc. as well....?? Hm....