> In a way I regret having said what I said about obscenity—that's going to be on my tombstone. When I remember all of the other solid words I've written, I regret a little bit that if I'll be remembered at all I'll be remembered for that particular phrase.
https://en.wikipedia.org/wiki/I_know_it_when_I_see_it
When the highest court in the land can't get a good grasp on whether a law has been broken or not you know you've hit a thorny problem.