An enquiry into the cause and origin of evil. In which the principal phænomena of nature are explained according to the true principles of philosophy; more particularly in Answer to Mr. Bayle and other Defenders of the antient Manichaean Scheme of two independent Principles. Being the substance of eight sermons preached at the parish-church of St. Mary le Bow, in the year 1719, at the Lecture founded by the Honourable Robert Boyle, Esq; By John Clarke, D. D. Chaplain in Ordinary to His Majesty.