Louis-Christophe Zaleski-Zamenhof Louis-Christophe Zaleski-Zamenhof Louis-Christophe Zaleski-Zamenhof (born Ludwik Krzysztof Zamenhof, 23 January 1925) is a civil and marine engineer, specializing in the design of structural steel and concrete construction. He is a grandson of the Polish-Jewish L. L. Zamenhof, the originator of the international auxiliary language Esperanto. Since the 1960s he has lived in France. He was born in Warsaw. After his father Adam Zamenhof was arrested and shot to death by the Nazis occupying Poland, he and his mother Wanda barely escaped deportation to the Nazi death camp at Treblinka where his aunts Zofia Zamenhof and Lidia Zamenhof were murdered. The
Ludwik Krzywicki Ludwik Krzywicki Ludwik Krzywicki (21 August 1859 – 10 June 1941) was a Polish anthropologist, economist and sociologist. One of the early champions of sociology in Poland, he approached historical materialism from a sociological viewpoint. From 1919 to 1936 he was a professor at the University of Warsaw. Ludwik Krzywicki was born at Płock in 1859 into an aristocratic but impoverished family. From an early age he showed an interest in psychology, philosophy and natural sciences, and studied the works of Darwin, Taine, Ribot and Comte. Krzywicki studied mathematics at the University of Warsaw in Congress Poland. After obtaining his