From Chapter 4:
But to turn from this worthy Exeter citizen to more famous names: I do not know of any good evidence as to whether or not Cromwell smoked, although he is said to have taken an occasional pipe while considering the offer of the crown, but John Milton certainly did. The account of how the blind poet passed his days, after his retirement from public office, was first told by his contemporary Richardson, and has since been repeated by all his biographers. His placid day ended early. The poet took his frugal supper at eight o'clock, and at nine, having smoked a pipe and drunk a glass of water, he went to bed. Apparently this modest allowance of a daily evening pipe was the extent of Milton's indulgence in tobacco. He knew nothing of what most smokers regard as the best pipe of the day—the after-breakfast pipe.

From Chapter 8:
Coleridge, in the "Biographia Literaria," gives an amusing account of his own experience of an attempt to smoke in company with a party of tradesmen. In 1795 he was travelling about the country endeavouring to secure subscriptions to the periodical publication he had started called The Watchman. At Birmingham one day he dined with a worthy tradesman, who, after dinner, importuned him "to smoke a pipe with him, and two or three other illuminati of the same rank." The remainder of the moving story must be told in Coleridge's own words. "I objected," he says, "both because I was engaged to spend the evening with a minister and his friends, and because I had never smoked except once or twice in my life-time, and then it was herb tobacco mixed with Oronooko. On the assurance, however, that the tobacco was equally mild, and seeing too that it was of a yellow colour,—not forgetting the lamentable difficulty I have always experienced in saying, 'No,' and in abstaining from what the people about me were doing,—I took half a pipe, filling the lower half of the bole with salt. I was soon, however, compelled to resign it, in consequence of a giddiness and distressful feeling in my eyes, which, as I had drunk but a single glass of ale, must, I knew, have been the effect of the tobacco. Soon after, deeming myself recovered, I sallied forth to my engagement; but the walk and the fresh air brought on all the symptoms again, and I had scarcely entered the minister's drawing-room, and opened a small pacquet of letters, which he had received from Bristol for me, ere I sank back on the sofa in a sort of swoon rather than sleep. Fortunately I had found just time enough to inform him of the confused state of my feelings, and of the occasion. For here and thus I lay, my face like a wall that is white-washing, deathly pale, and with the cold drops of perspiration running down it from my forehead, while one after another there dropped in the different gentlemen, who had been invited to meet, and spend the evening with me, to the number of from fifteen to twenty. As the poison of tobacco acts but for a short time, I at length awoke from insensibility, and looked round on the party, my eyes dazzled by the candles which had been lighted in the interim. By way of relieving my embarrassment one of the gentlemen began the conversation with 'Have you seen a paper to-day, Mr. Coleridge?' 'Sir,' I replied, rubbing my eyes, 'I am far from convinced that a Christian is permitted to read either newspapers or any other works of merely political and temporary interest.' This remark, so ludicrously inapposite to, or rather, incongruous with, the purpose for which I was known to have visited Birmingham, and to assist me in which they were all met, produced an involuntary and general burst of laughter; and seldom indeed have I passed so many delightful hours as I enjoyed in that room from the moment of that laugh till an early hour the next morning."