He became active in te abolitionist movement, lectured on slavery troughout the Northeastern United States and aided fuitive slaves on the Underground Railroad.
Hann var virkur í afnámshreyfingunni, hélt fyrirlestra um ūrælahald.. um stærstan hluta Norđaustur-Ameríku og veitti ūrælum í "Underground Railroad" hjálparhönd.