1625. Bp. Hall, Contempl., O. T., IV. iii. Wks. 870. As on the contrary, carelesnesse caries vs to a meere vnproficiency vnder the best meanes of God.
1665. Boyle, Occas. Refl., IV. ix. 59. Tis no mean sign of Proficiency in Piety, to be apt to deplore ones unproficiency.
1691. Norris, Pract. Disc., Pref. 4. The unproficiency of the World under such extraordinary Advantages.