Claim: The Metaphysical Society of America, a member of the American Council of Learned Societies, was established in 1950 by Paul Weiss.
Evidence: The society is a member of the American Council of Learned Societies. The Metaphysical Society of America (MSA) is a philosophical organization founded by Paul Weiss in 1950. 
The society is a member of the American Council of Learned Societies. Paul Weiss 1950