Max Ungar (1850-1930) was the son of an Orthodox Jew born in Boskovice, Moravia, and pursued a scientific career in Vienna University after which he took over the failing family business. He returned to Vienna for a few years before coming home to Brno in a private capacity. His memoirs encapsulate many multi-faceted change processes. Although he wrote his memoirs chronologically, there is a recognisable leitmotif: on the one hand his escape from Orthodox Judaism into a century of high liberalism and the turning to science and knowledge; while on the other hand it charts his failure as a devotee of the humanism he was dedicated to as result of his pursuit of science and knowledge. In this respect Max Ungar's reminiscences written in 1928 but covering the period 1855 1892/1928 are particularly significant for their overlapping topics: for its Jewish history during the Austro-Hungarian monarchy in the 19th century and for the portrayal of identity in the modern period.