"'No person,' he states,[1] 'can tell the severe trial which the writing of it proved to me. I had expected pleasure from the invention of the arguments, from the arrangement of them, from the putting of them together, and from the thought, in the interim, that I was engaged in an innocent contest for literary honour. But all my pleasure was damped by the facts which were now continually before me. It was but one gloomy subject from morning to night. In the day-time I was uneasy; in the night I had little rest. I sometimes never closed my eyelids for grief. It became now not so much a trial for academical reputation, as for the production of a work which might be useful to injured Africa. And keeping this idea in my mind ever after the perusal of Benezet, I always slept with a candle in my room, that I might rise out of bed, and put down such thoughts as might occur to me in the night, if I judged them valuable, conceiving that no arguments of any moment should be lost in so great a cause. Having at length finished this painful task, I sent my Essay to the Vice-Chancellor, and soon afterwards found myself honoured, as before, with the first prize. [1] History of the Abolition of the Slave Trade. "'As it is usual to read these essays publicly in the senate-house soon after the prize is adjudged, I was called to Cambridge for this purpose. I went, and performed my office. On returning, however, to London, the subject of it almost wholly engrossed my thoughts. I became at times very seriously affected while upon the road. I stopped my horse occasionally, and dismounted, and walked. I frequently tried to persuade myself in these intervals that the contents of my Essay could not be true. The more, however, I reflected upon them, or rather upon the authorities on which they were founded, the more I gave them credit. Coming in sight of Wade's Mill, in Hertfordshire, I sat down disconsolate on the turf by the road-side, and held my horse. Here a thought came into my mind, that if the contents of the Essay were true, it was time some person should see these calamities to their end. Agitated in this manner, I reached home. This was in the summer of 1785.