In these few volumes may be summed up the entire literary knowledge which Bunyan is known to have possessed. He stands apart from mere book-learning, and deals with life rather through his eyes and ears directly than through the medium of books. But then those eyes and ears of his were no ordinary organs; and his imagination, whose servants they were, was quick to enlist every vital and suggestive image and idea for its own uses. Thus the rich store of observation which he had already laid up through the medium of puppet plays, fragments of song and popular story, was all at his disposal when he came to need it. Further, even in his regenerate days, there was no dimming of the imaginative faculty nor of the observant. The whole neighbourhood in which he lived was an open book, in which he read the wonderful story of life in many tragic and comic tales of actual fact; and in the prison where he spent twelve years, he must often have heard from his fellow-prisoners such fragments as they knew and remembered, with which doubtless they would beguile the tedium of their confinement. That would be for the most part in the first and second imprisonments, extending from the years 1660 to 1672. The third imprisonment was a short affair of only some nine months, spent in the little prison upon the bridge of Bedford, where there would be room for very few companions. The modern bridge crosses the river at almost exactly the same spot; and if you look over the parapet you may see, when the river is low, traces of what seem to be the foundations of the old prison bridge.