 He was one of the Utrecht Circle.a Dutch second Reformation grouping around Anna Maria van Schurman, in the period when she was a close follower of Voetius.It included also the physician Johan Godschalk, Justus van den Bogaart, Theodore à Brakel, Cornelius Gentman, Johannes Hoornbeeck, Jodocus van Lodenstein, Johannes Teellinck, and Abraham van de Velde.