Jesse Hauk Shera was an influential library philosopher born in 1903. He received degrees in English and a doctorate in library science. Shera held several positions including at the University of Chicago library and was also an editor. He published extensively over his career. Shera developed the philosophy of social epistemology, which views knowledge as a social construct that libraries help shape. His belief that libraries mediate between users and information sources helped establish the theoretical foundations for the field. While technology has changed, Shera's view that libraries play a role in supporting knowledge creation in society remains highly relevant today.