An introductory series on Apologetics by Dr. Van Til below going through the history of philosophy from greek philosophy up to Karl Barth.

Note: this series assumes a basic level of philosophical terminology to understand the series well i.e. terms such as Neo-Platonism.
Note: A longer version of this series on apologetics by Dr. Cornelius Van Til is available on itunes-U by under apologetics in the Westminister Theological Seminary entitled: Christ and Human Thought.  This series extends from karl Barth below to cover more topics such as Berkouwer, and a critique of neo-orthodoxy.
Articles from Dr. Van Til at the following websites:
Series below from SermonAudio: