I would say if you want to read Francis Schaeffer you might be better off reading Total Truth by Nancy Pearcy. I believe she takes much of what Schaeffer said and puts it into a more structured presentation. She adds rigor that is missing in Schaeffer'sooks.

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Pax,
Richard Elliott
Midlothian, Virginia
Deacon, Presbyterian Church in America
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I believe in Christianity as I believe that the sun has risen: not only because I see it, but because by it I see everything else. , C. S. Lewis