gathering in london with dr. branon will be several past recipients of the templeton prize , including : his holiness the xiv dalai lama ( 2012 ) , the spiritual leader of tibetan buddhists ; dr. martin rees ( 2011 ) , theoretical astrophysicist ; dr. bernard despagnat ( 2009 ) , philosophical physicist ; dr. charles taylor ( 2007 ) , scientific philosopher ; and dr. holmes rolston iii ( 2003 ) , environmental ethicist .