“The most important thing you need to do [in this job] is to have big chunks of time during the day when all you’re doing is thinking.”

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.