Dr. J. van Ginneken S.J., whose death occurred on the 20th of October 1945, was the author of the well-known “Principes de Linguistique psychologique”. In the above article the writer commemorates Dr. van Ginneken particularly as a significist. During the years 1919–1924 the writer was privileged — together with his friends L. E. J. Brouwer and Fred. van Eeden — to collaborate with Dr. van Ginneken on the subject of significs. This collaboration has always been a precious memory to him. It proved moreover, that profound differences in conception about life and world need not prevent a fertile exchange of thoughts, provided the participants are actuated by the serious will to fathom to the depth each other's mentality.