This talk begins by addressing where contemporary physical theory meets physiological and psychological descriptions in several works by William Blake which presage what has been termed ‘the new physics’ of quantum mechanics and relativity. Having spent a great deal of energy researching and writing on Blake’s relationship to science, Mark returned to visionary physics on learning of the death of Donald Ault, author of Visionary Physics: Blake’s Response to Newton, which opened a productive dialogue in Blake studies between physics and psyche.