**# automatic playing for the 4 videos (click the up-left corner for the list)**

source: Closer To Truth 上次更新20160404

Steven Weinberg - Is Mathematics Invented or Discovered? 8:42

Roger Penrose - Is Mathematics Invented or Discovered? 4:15

Stephen Wolfram - Is Mathematics Invented or Discovered 4:17

Stephen Wolfram - Is Mathematics Invented or Discovered? 10:09

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