The brains a funny old thing.
I have been reading about (and looking at pictures by) Louis Wain, a prolific artist from Clerkenwell, who developed a fondness for cats when his wife fell ill (and later died). He then slowly deteriorated mentally after his mother died, until he was placed into a Mental Hospital in Tooting in 1924 by his sisters.
From there, he was eventually moved to a hospital in Napsbury, thanks to the intervention of prominent figures of the time.
There are arguments about whether he had Schizophrenia or Asperger syndrome, but what is not disputed, is how his cat illustrations became pretty wild and colourful.
They certainly appeal to me (and he taught Peter, his cat, to wear spectacles).