My thanks to everyone who suggested mottos–there were some really good ones, but in the end, I had to go with the classic:
I despise the arrogant wombat.

In case anyone doesn’t know the origin, I once had a troll with a questionable grip on either the language or consensual reality leave some truly bizarre comments on my art, one of which was the marvelous phrase “I despise the arrogant wombat.” The pleasure I have derived from this phrase is all out of proportion, and it still gives me the warm fuzzies. ‘Cos I mean, really, doesn’t that just say it all?