Diary of John Quincy Adams, volume 2 Previous document in volume 30th. Next document in volume Titlepage Finis. JQA Finis. Adams, John Quincy Finis. Nil tam difficile, quod non Solertia vincat.1 1. This Latin proverb originally appeared at the beginning of JQA's first discourse before the A.B. Club (entry for 12 June, above).