“I have Learned Non-Euclidean Geometry Just from this Book” - Some facets of the correspondence between Friedrich Engel and David Hilbert

Abstract Friedrich Engel and David Hilbert learned to know each other at Leipzig in 1885 exchanged letters particular during the next 15 years which contain interesting information on academic life of mathematicians end 19th century. In present article we will mainly discuss a statement by himself Moritz Pasch’s influence his views geometry, personnel politics concerning Hermann Minkowski Eduard Study but also himself.