You see I am like a surgeon in a hospital; all these [sketches / watercolors] lying around me are my patients, and as I walk about among them I notice those most in need of doctoring. I pick out some sickly looking specimen and say to myself, 'Only wait a moment, and I will find some remedy for you'; some need much medicine, and some even require a severe operation to bring them round. Look at that one in the corner. I believe it is suffering from jaundice, but doubtless I shall find a cure for it.