Richard D. Wolff is a American economist, well-known for his work on Marxist economics, economic methodology and class analysis. Wolff received his Ph.D. in economics from Yale University in 1969. Wolff taught at the City College of New York from 1969-1973, and teaches graduate seminars and undergraduate courses and direct dissertation research in economics at the University of Massachusetts Amherst. He has authored numerous articles and books and has given many public lectures at colleges and universities (Notre Dame, University of Missouri, Washington College, Franklin and Marshall College, New York University, etc.) to community and trade union meetings, in high schools, etc. He also maintains an extensive schedule of media interviews (on many independent radio stations such as KPFA in Berkeley, KPFK in Los Angeles, WBAI in New York, National Public Radio stations, Alternative Radio, The Real News Network, the Glenn Beck Show, and so on).