Filosofia Viva

http://www.youtube.com/v/d0Uj04-p4zE?autohide=1&version=3&attribution_tag=YpKrnIpBGd4F2fT2utQ_Nw&feature=share&autoplay=1&autohide=1&showinfo=1

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http://www.youtube.com/v/nreNjLyf12U?version=3&autohide=1&autohide=1&feature=share&autoplay=1&showinfo=1&attribution_tag=JPd4urH1WHZyy5lQygvChw