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289A
Allenstein
1 April 1916
Dear Professor,
During the last few weeks I have spent my somewhat limited leisure time studying your new paper on the Unconscious. I am not quite sure how many times I have read it. I had the same experience as with the Three Essays ten years ago. Once again I am amazed how you have succeeded in saying everything of importance so concisely and systematically and linked it all up to form a complete structure. As with the earlier work, every subsequent reading uncovered for me something new that I had not yet assimilated in previous readings. It is probably the most fundamental and important of your papers for a long time; it provides a final and firm foundation for our whole science, leaving none of the familiar concepts unexamined and developing new concepts so