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• [TED] Derek Sivers: How to start a movement Derek Sivers: How to start a movement So, ladies and gentlemen, at TED, we talk a lot about leadership Now, there he is c....... blog.naver.com · 2013.12.23
• Lewis's trilemma It was popularised by C. S. Lewis in a BBC radio talk and in his writings. blog.naver.com · 2009.12.01

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