Let me give an instance of his thoroughness in his art work.
Once when in his studio I saw him occupied on a beautiful piece of painting, a shrub with a myriad of branches laden with berries and but few leaves, through which was seen the detail of the architecture of the marble building beyond. The picture was then almost finished. The next time I came I found him still hard at work on the same painting; but it was not nearly so far advanced. Dissatisfied with the total effect, he had painted out the entire background and was engaged on a new and quite different one. The labour involved in this stupendous change almost made me shudder. It needs but a small amount of thought to understand the infinite care and delicacy of touch to complete an elaborate architectural drawing between the gaps of those hundreds of spreading twigs.