Alexander Gilchrist, Life of William Blake (1880)
“ He is not taught this; it comes to him as blossoms come to the spring, and is the first mark of his vocation. It was this inward thirst and longing that sent out the boy Blake into the fields and lanes, and among the surburban hills. The force of boyish imagination must have been stronger in him than in most, even of the children of genius, for, as early as the age of thirteen or fourteen, the conceptions of his mind began to assume an external form. He saw a tree sparkling in the sun, and discovered that it was filled with angels. ”

