In our modern forms of specialized education there is a tendency to lose the whole in the parts, and in this sense we can say that our generation produces few truly educated people. True education means thinking by associating across the various disciplines, and not just being highly qualified in one field, as a technician might be. I suppose no discipline has tended to think more in fragmented fashion than the orthodox or evangelical theology of today.
Those standing in the stream of historic Christianity have been especially slow to understand the relationships between various areas of thought. When the apostle warned us to “keep [ourselves] unspotted from the world,” he was not talking of some abstraction. If the Christian is to apply this injunction to himself, he must understand what confronts him antagonistically in his own moment of history. Otherwise he simply becomes a useless museum piece and not a living warrior for Jesus Christ.
The orthodox Christian has paid a very heavy price, both in the defense and communication of the gospel, for his failure to think and act as an educated person understanding and at war with the uniformity of our modern culture. —Francis Schaeffer, The God Who Is There