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[youtube]http://www.youtube.com/watch?v=18TknKGC7tY[/youtube]

SYNOPSIS: Erik-Jan, a philosophy scholar in the Netherlands, has spent 20 years studying René Descartes. In 2010, his search to understand Descartes’ correspondences led him to something that had been missing for over 300 years.

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Run Time: 2:01 minutes