Thy ignorance in unrevealed mysteries is the mother of a saving faith, and thy understanding in revealed truths is the mother of a sacred knowledge; understand not therefore that thou mayest believe, but believe that thou mayest understand; understanding is the wages of a lively faith and faith is the reward of an humble ignorance.

Uniform with the Enchiridion: Spare Minutes Or Resolved Meditations and Premeditated Resolutions (ed. 1822)