Note 382 — CCLXX.—To the Lady Busbie. [Letter CXXXIII.]
Reading edition
Perhaps referring to Job xv. 26, though some have referred to a game wherein "Hard-heads," a small Scotch coin, was used. In his "Christ Dying and Drawing," p. 178, he writes, "Is it wisdom to knock hard-heads with God?" So in Sermon on Zech. xiii. 7, 8.