"When I first took this task in hand, et quod ait [60] ille, impellents genio negotium suscepi, this I aimed at; [61] vel ut lenirem animum scribendo, to ease my mind by writing; for I had gravidum cor, foetum caput, a kind of imposthume in my head, which I was very desirous to be unladen of, and could imagine no fitter evacuation than this."