Among the most influential, world-renowned scientists during the early decades of the twentieth century was the Dutch astronomer Jacobus Cornelius Kapteyn (1851-1922). Kapteyn's influence resulted from and contributed to the golden age of Dutch science. In the words of the brilliant English astrophysicist, Arthur S. Eddington: Holland has given many scientific leaders to the world: it is doubtful whether any other nation in proportion to its size...