This is a must for any Medievalist. Spearing switches on the light on the alternative tradition through a seminal study of Medieval oneiric poetry. Starting with an analysis of how Boece's Consolatio Philosophiae and the importance of dreams in the shaping of the mindset of the Middle Ages, he then presents the great dream poems of the time, from Chaucer to Langland, the conventions, such as the locus amoenus and hortus conclusus of a genre almost forgotten before the publication of this text are studied with rigour and on detail.
I have loved this text so much that I have been collecting everything I can find by him, editions of Chaucer with an introduction by Spearing, articles, you name it.