 I became acquainted with Dilthey’s work as late as 1929, and it took me four more years before I knew it sufficiently well. This ignorance, I do not hesitate to maintain, has caused me to lose about ten years of my life—ten years, in the first place of intellectual development, but that of course, means an equal loss in all other dimensions of life…. When I studied in Berlin in 1906…Dilthey happened to have given up lecturing in the university building a few years before and admitted to courses he held in home for only a few specially prepared students. Thus chance had it that I did not come in touch with him. (Obras, VI: 171–72)