I'm pretty familiar with the thinking of Van Til, having studied his writings for some time now. I'm not as familiar with Gordon Clark, but know that he was a major philosophical/apologetic force within the 20th century along with Van Til. I have three basic questions. First, what are some of the major differences between Van Til and Clark? I know Clark flat out rejected all forms of empiricism, rationalism, and evidentialism, bordering on a sort of philosophical skepticism which he termed "dogmatism." I also know that he is considered a pre-suppositionalist. Nevertheless, I'm not really familiar with how Clark's apologetical methods differ from Van Til's. Second, I've heard about the famous Clark/Van Til controversy which essentially drove Clark out of the OPC if I'm correct (correct me if I'm wrong.) Could someone please explain to me the basic thrust of the the controversy and what it was all about? Third, are there any "Clarkians" on the PB who would mind explaining and defending Clark's apologetic method over Van Til's? Van Til seems to have gained much more of a following within the Reformed community than Clark, but I think there are Clarkians out there like Rob Reymond. These questions are basic and arise out of my lack of study on some of these issues. I'd love to hear your thoughts. Thanks!