The Dr Whooves picture

Found this on someone's tumblr. It's what the previously mentioned birthday card was copied from. Now you can all see the visual!

Says Tom to Bill, pray tell me, sir,
Why is it that the devil,
In spite of all his naughty ways,
Can never be uncivil?

Says Bill to Tom, the answer’s plain
To any mind that’s bright:
Because the imp of darkness, sir,
Can ne’er be imp o’ light.

– Charles Carroll Bombaugh, Gleanings for the Curious From the Harvest-Fields of Literature, 1890