During this time his family moved to Haarlem, just west of Amsterdam, and it was in the Gymnasium there in 1897 that he sat the entrance examinations for the University of Amsterdam.
Sa panahong ito ang kanyang pamilya inilipat sa Haarlem, makatarungan kanluran ng Amsterdam, at ito ay sa himnasyo doon sa 1897 na siya Sabado sa pasukan na pagsusuri para sa University of Amsterdam.