Article 4
There remain, however, in man since the fall, the glimmerings of natural
understanding, whereby he retains some knowledge of God, of natural things, and
of the difference between good and evil, and shows some regard for virtue and
for good outward behavior. But so far is this understanding of nature from
being sufficient to bring him to a saving knowledge of God and to true
conversion that he is incapable of using it aright even in things natural and
civil. Nay further, this understanding, such as it is, man in various ways
renders wholly polluted, and hinders in unrighteousness, by doing which he
becomes inexcusable before God.