God Unknown and Known

"His essence, indeed, is incomprehensible, utterly transcending all human thought; but on each of his works his glory is engraven in characters so bright, so distinct, and so illustrious, that none, however dull and illiterate, can plead ignorance as their excuse." - John Calvin, Institutes of Religion, 1:51 (1.5.1) as quoted in R.C. Sproul, Grace Unknown: The Heart of Reformed Theology, pg. 35