"Theron and Aspasio, or a series of Letters upon the most important and interesting Subjects", which appeared in 1755, and was equally well received, called forth some adverse criticism even from Calvinists, on account of tendencies which were considered to lead to antinomianism, and was strongly objected to by Wesley in his "Preservative against unsettled Notions in Religion". Besides carrying into England the theological disputes to which the "Marrow of Modern Divinity" had given rise in Scotland (the Marrow controversy), it also led to what is known as the Sandemanian controversy as to the nature of saving faith.