The University of Marburg was among Europe's most important universities in the mid-18th century due to the presence of the philosopher Christian Wolff, a prominent figure of the German Enlightenment. Lomonosov became one of Wolff's personal students while at Marburg. Both philosophically and as a science administrator, this connection would be the most influential of Lomonosov's life. Between 1739–1740 he studied mineralogy, metallurgy, and mining at Bergrat Henckel's laboratories in Freiberg, Saxony; there he intensified his studies of German literature.[12]
The most grandiose of Lomonosov's mosaics depicts the Battle of Poltava.
Lomonosov quickly mastered the German language, and in addition to philosophy, seriously studied chemistry, discovered the works of 17th century English theologian and natural philosopher, Robert Boyle, and even began writing poetry. He also developed an interest in German literature. He is said to have especially admired Günther. His Ode on the Taking of Khotin from the Turks, composed in 1739, attracted a great deal of attention in Saint Petersburg.[12]
During his residence in Marburg, Lomonosov boarded with Catharina Zilch, a brewer's widow.[13] He fell in love with Catharina’s daughter Elizabeth Christine Zilch. They were married in June 1740.[14] Lomonosov found it extremely difficult to maintain his growing family on the scanty and irregular allowance granted him by the Russian Academy of Science. As his circumstances became desperate, he resolved to return to Saint Petersburg.[12]