“Change will not come if we wait for some other person or some other time. We are the ones we've been waiting for. We are the change that we seek.”

American politician and author, 21st century. He served as the 44th president of the United States from 2009 to 2017, known for his emphasis on unity, progressive policy, and diplomatic engagement. His writing and speeches often explore themes of hope, resilience, and the moral responsibilities of leadership.