Seven hours to law, to soothing slumber seven,
Ten to the world allot, and all to heaven.

In Lord Teignmouth, Life of Sir W. Jones (1835), vol. 2. Reported in Bartlett's Familiar Quotations, 10th ed. (1919). Compare: "Six hours in sleep, in law's grave study six, / Four spend in prayer, the rest on Nature fix", Translation of lines quoted by Edward Coke