Look even at Pussy Sobersides, with her dull, sleepy glance, her grave, slow walk, and dignified, prudish airs; who could ever think that once she was the blue-eyed, whirling, scampering, head-over-heels, mad little firework that we call a kitten? What marvelous vitality a kitten has. It is really something very beautiful the way life bubbles over in the little creatures. They rush about, and mew, and spring; dance on their hind legs, embrace everything with their front ones, roll over and over, lie on their backs and kick. They don't know what to do with themselves, they are so full of life.

Idle Thoughts of an Idle Fellow (1886)