Just as Greek_Philosophy started with revelation and ended with rationalism Modern_Philosophy started with revelation and ended with rationalism.
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The difference is that the Greek philosophers labored with only a single ray of revelation which was not the Full_Revelation while the modern philosophers started with Full_Revelation (which they rejected) and degenerated into rationalism bereft of even the glimmer of revelation.
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This accounts for the darkness of modern philosophy.  Once Truth is rejected, confusion, futility and death follow.  <i>The rational mind is enmity with God </i>.