In The Rise and Fall of the Third Reich in the section on the early life of Adolf Hitler, William Shirer brings some memos from the teachers of Adolf Hitler as a recollection from the time he was their student at Linz.
William Shirer wrote that the history professor Dr. Leopold Poetsch was the only professor Hitler liked and that was mentioned in his book Mein Kampf.
It was perhaps decisive for my whole later life that good fortune gave me a history teacher who understood, as few others did, this principle …—of retaining the essential and forgetting the nonessential … In my teacher. Dr. Leopold Poetsch of the high school in Linz, this requirement was fulfilled in a truly ideal manner. An old gentleman, kind but at the same time firm, he was able not only to hold our attention by his dazzling eloquence but to carry us away with him. Even today I haired man who, by the fire of his words, sometimes made us forget the present; who, as if by magic, transported us into times past and, out of the millennium mists of time, transformed dry historical facts into vivid reality. There we sat, often aflame with enthusiasm, sometimes even moved to tears … He used our budding national fanaticism as a means of educating us, frequently appealing to our sense of national honor. This teacher made history my favorite subject. And indeed, though he had no such intention, it was then that I became a young revolutionary.
Why did Shirer omit some info in lines 3 4 and 14. Is that how they were mentioned in Mein Kampf? Or was it unrecoverable pages from back then ?