From Chapter 2:
It chaunc'd me gazing at the Theater,
To spie a Lock-Tabacco Chevalier
Clowding the loathing ayr with foggie fume
Of Dock Tobacco friendly foe to rhume—

says a versifier of 1599, who did not like smoking in the theatre and so abused the quality of the tobacco smoked—though admitting its medicinal virtue. Dekker suggests, probably with truth, that one reason why the young gallant liked to push his way to a stool on the stage, notwithstanding "the mewes and hisses of the opposed rascality"—the "mewes" must have been the squeals or whistles produced by the instrument which was later known as a cat-call—was the opportunity such a prominent position afforded for the display of "the best and most essential parts of a gallant—good cloathes, a proportionable legge, white hand, the Persian lock, and a tolerable beard." Apparently, too, serving-boys were within call, and thus lights could easily be obtained, which were handed to one another by the smokers on the points of their swords.

From Chapter 6:
Other well-known men of the late seventeenth century were "tobacconists" in the old sense of the word. Sir Isaac Newton is said to have smoked immoderately; and a familiar anecdote represents him as using for the purposes of a tobacco-stopper, in a fit of absent-mindedness, the little finger of a lady sitting beside him, whom he admired, but the truth of this legend is open to doubt. Thomas Hobbes, who lived to be ninety (1588-1679), was accustomed to dine at 11 o'clock, after which he smoked a pipe and then lay down and took a nap of about half an hour. No doubt he would have attributed the length of his days to the regularity of his habits. Izaak Walton, who also lived to be ninety, as the lover of the placid and contemplative life deserved to do, loved his pipe, though he seldom mentions smoking in the "Compleat Angler." Sir Samuel Garth, poet and physician, once known to fame as the author of "The Dispensary," was another pipe-lover, as is shown by his verses quoted at the head of this chapter. Dudley, the fourth Lord North, began to smoke in 1657, and, says Dr. Jessopp, "the habit grew upon him, the frequent entries for pipes and tobacco showing that he became more and more addicted to this indulgence. Probably it afforded him some solace in the dreadful malady from which he suffered so long."