Fool’s Talk by Os Guinness is an excellent resource for thoughtful Christian apologetics. I’ve mentioned it here before so I won’t go into details. But there is a section I was recently reading again – a section which is well worth posting here. It’s based on Romans 1:18ff:
“At the core of unbelief is ceaseless, unremitting and inescapable tension and conflict. Unbelievers suppress the truth in unrighteousness, but it is still always the truth, so they can never completely get away from it. An unbeliever’s view of the world without God may contain many deep truths and have all sorts of genuine merits. But that view of the world can never be completely true, because the unbeliever will not accept God, without whom it will always be finally false at some points. Yet at the same time, the unbelievers’ views of the world are never completely false, because they can never get away completely from God and his truth. Unbelief is therefore always an inherently in tension, and it can never escape this conflict. Whatever view of the world unbelief espouses, it is always partly true but twisted, and it is always twisted, though never other than still partly true.”
Os Guinness, Fool’s Talk, p. 93-4.