Since Hayley could never disguise his inmost thoughts, Blake soon perceived that he intended to keep him strictly to the graver, as he had no opinion of his original works, whether in poetry or design. Blake found relief in painting for Thomas Butts, who was his friend and patron for over thirty years, and to whom he sent exquisite pictures, and some letters priceless for their revelation of the writer. From these we learn the nature of Blake's spiritual crisis at Felpham. Miniature portrait painting drove home to him the vast difference between historical designing and portrait painting. Portrait requires nature before the painter's eye, historical designing depends on imagination. Nature and imagination were as antithetical in Blake's eye as nature and grace in the theologian's, and just here he kept as far away from pantheism as he could in his obstinate determination to keep nature and imagination as separate as the sheep and the goats. While agreeing with Blake in keeping them apart, I suppose most of us would say that the finest portrait painting depended on imagination no less than historical designing. The atmosphere of Felpham induced in Blake long fits of abstraction and brooding, and he pushed his thoughts on miniature forwards to the recollecting of all his scattered thoughts on art. He determined to discontinue all attempts at eclecticism. Venetian _finesse_ and Flemish _picturesque_ were "excellencies of an inferior order" and "incompatible with the grand style." He was convinced that the reverse of this--uniformity of colour and long continuation of lines--produces grandeur. So said Sir Joshua, who did not always practise what he preached in his discourses; so said Michael Angelo, whose profession and practice were one; so said Blake, who was decided, while adhering to the principles of the great Florentine, to be true to his own genius, so that his work should be as distinct from Michael Angelo's as Caracci's from Correggio's, or Correggio's from Raphael's.