In a statement addressing his retirement, Summers said the decision was not easy. He expressed appreciation for the many students, colleagues, and researchers he worked with during his decades-long association with Harvard. Summers noted that he first arrived at the university as a graduate student nearly fifty years ago. After leaving his Harvard roles, Summers said he plans to devote more time to research, writing, and global economic analysis. His career also includes serving as Treasury secretary under Bill Clinton and later advising Barack Obama on economic policy.