I'll rescue them, but four is the limit.
In the (hopefully far distant) future, when it's time to adopt another cat, The Honorable Mathematician gets to pick. It's his turn.
The professor in my clinical behavior class at school said that the official "crazy cat lady" limit is over six cats. I still have a buffer of two cats between me and that title; fortunately I only have room for four, so it's improbable I'll ever achieve that lofty goal.