Rizal spent 1886-1887 in Berlin, Germany, which was known for its scientific community and lack of racial prejudice. There, he met Dr. Feodor Jagor, a German scientist who had written a book about the Philippines. Dr. Jagor introduced Rizal to other prominent German scientists, including Dr. Rudolf Virchow. Rizal joined scientific societies and worked in an ophthalmology clinic. He studied various subjects and observed Germany's economic and political conditions. With help from a friend, Rizal was able to publish his novel Noli Me Tangere in 1887 while in Berlin.