and published a textbook about human physiology. However, his main interest, according to his lectures and classes, was not in the medical field – he was more attracted by psychology and related subjects. His lectures on psychology were published as Lectures on Human and Animal Psychology in 1863–1864. Wundt applied himself to writing a work that came to be one of the most important in the history of psychology, Principles of Physiological Psychology, in 1874. This was the first textbook that was written pertaining to the field of experimental psychology. Marriage and family In 1867, near Heidelberg, Wundt met Sophie Mau (1844–1912). She was the eldest daughter of the Kiel theology professor :de: Heinrich August Mau and his wife Louise, née von Rumohr, and a sister of the archaeologist August Mau. They married on 14 August 1872 in Kiel. The couple had three children: Eleanor (*1876–1957), who became an assistant to her father in many ways, Louise, called Lilli, (*1880–1884) and :de: Max Wundt (*1879–1963), who became a philosophy professor. Career in Zurich and Leipzig In 1875, Wundt was promoted to professor of "Inductive Philosophy" in Zurich, and in 1875, Wundt was made professor of philosophy at the University of Leipzig where Ernst Heinrich Weber (1795–1878) and Gustav Theodor Fechner (1801–1887) had initiated research on sensory psychology and psychophysics – and where two centuries earlier Gottfried Wilhelm Leibniz had developed his philosophy and theoretical psychology, which strongly influenced Wundt's intellectual path. Wundt's admiration for Ernst Heinrich Weber was clear from his memoirs, where he proclaimed that Weber should be regarded as the father of experimental psychology: "I would rather call Weber the father of experimental psychology…It was Weber's great contribution to think of measuring psychic quantities and of showing the exact relationships between them, to be the first to understand this and carry it out." Laboratory of Experimental Psychology In 1879, at the University of Leipzig, Wundt opened the first laboratory ever to be exclusively devoted to psychological studies, and this event marked the official birth of psychology as an independent field of study. The new lab was full of graduate students carrying out research on topics assigned by Wundt, and it soon attracted young scholars from all over the world who were eager to learn about the new science that Wundt had developed. The University of Leipzig assigned Wundt a lab in 1876 to store equipment he had brought