Travelling in France and England, he came to study the Cartesian philosophy under Johannes de Raey at Leiden.
In Amsterdam he became a member of the informal society "Collegium privatum Amstelodamense", of which the members (among whom were Jan Swammerdam and Gerard Blasius) practised the comparative anatomical research of man and animal.
Johannes Vermeer | Johannes Kepler | Johannes Gutenberg | Johannes Peter Müller | Johannes Ockeghem | Johannes Rau | Johannes Müller | Johannes Heesters | Johannes Zukertort | Johannes Meursius | Cornelis Johannes van Houten | Johannes Meyer | Johannes Itten | Johannes Blaskowitz | Johannes von Lahnstein | Johannes Mötsch | Johannes Hevelius | Johannes Ciconia | Johannes von Trapp | Johannes von Müller | Johannes Ullrich | Johannes Trithemius | Johannes Theodor Reinhardt | Johannes Magnus | Johannes Leimena | Johannes Ghiselin | Johannes Gad | Johannes Ewald | Johannes Diderik van der Waals | List of paintings by Johannes Vermeer |