The Reverend Dr. Hugh Blair, who had long been admired as a preacher at Edinburgh, thought now of diffusing his excellent sermons more extensively, and encreasing his reputation, by publishing a collection of them. He transmitted the manuscript to Mr. Strahan, the printer, who after keeping it for some time, wrote a letter to him, discouraging the publication. Such at first was the unpropitious state of one of the most successful theological books that has ever appeared. Mr. Strahan, however, had sent one of the sermons to Dr. Johnson for his opinion; and after his unfavourable letter to Dr. Blair had been sent off, he received from Johnson on Christmas-eve, a note in which was the following paragraph: "I have read over Dr. Blair's first sermon with more than approbation; to say it is good, is to say too little."

I believe Mr. Strahan had very soon after this time a conversation with Dr. Johnson concerning them, and then he very candidly wrote again to Dr. Blair, enclosing Johnson's note, and agreeing to purchase the volume, for which he and Mr. Cadell gave one hundred pounds. The sale was so rapid and extensive, and the approbation of the publick so high, that to their honour be it recorded, the proprietors made Dr. Blair a present first of one sum, and afterwards of another, of fifty pounds, thus voluntarily doubling the stipulated price; and when he prepared another volume they gave him at once three hundred pounds, being in all five hundred pounds, by an agreement to which I am a subscribing witness ; and now for a third octavo volume he has received no less than six hundred pounds. (--Boswell, Life of Dr. Johnson)