What is the American Philosophical Society?
The American Philosophical Society is America’s oldest learned society. It was founded by Benjamin Franklin in 1743. American Philosophical Society Hall located at 105 S. 5th Street was built in 1789. The motto of the American Philosophical Society is Nullo Discrimine, which means We are Open to All. Source: Philadelphia Almanac and Citizen’s Manual, 1995, p.121, 145, Kenneth Finkel, 974.