1) The document introduces three famous motivational speeches that can inspire people: Barack Obama's 2004 DNC speech where he discussed his roots and inspired hope; Jim Carrey's 2014 commencement address where he encouraged graduates to never settle for less than they want; and Steve Jobs' 2005 Stanford commencement speech where he discussed dropping out of college, getting fired from Apple, and being diagnosed with cancer. 2) These speeches show how leaders can motivate through communication and tap into people's hidden resources with the right attitude. 3) The document provides context and summaries of each speech to illustrate how they motivated and inspired the audiences.