The entire eugenics movement was criticized for being supposedly based on racist and classist assumptions set out to prove the unfitness of wide sections of the American population which Davenport and his followers considered "degenerate", using methods criticized even by British eugenicists as unscientific. In 1907 and 1910 Charles Davenport and his wife wrote four essays that pertained to human hereditary genes. These essays included hair color, eye color, and skin pigmentation. These essays helped pave the way for eugenics to be taught in class. Many of the topics and discussions belonged to Dr. and Mrs. Charles Davenport but the information for one essay in particular came from friends of theirs involved in the same topic. Many problems occurred when they started to use other information. As Davenport and other eugenicist professors and experts began to and continued to study more in-depth eugenics, they had to start to come up with original ideas so as not to conflict with past ideas. After Adolf Hitler's rise to power in Germany, Davenport maintained connections with various Nazi institutions and publications, both before and during World War II. He held editorial positions at two influential German journals, both of which were founded in 1935, and in 1939 he wrote a contribution to the "Festschrift" for Otto Reche, who became an important figure in the plan to "remove" those populations considered "inferior" in eastern Germany. In a 1938 Letter to the Editor of Life magazine, he included both Franklin Roosevelt and Joseph Goebbels as examples of crippled statesmen who, motivated by their physical defects, have "led revolutions and aspired to dictatorships while burdening their country with heavy taxes and reducing its finances to chaos." He died of pneumonia in 1944. As quoted in the National Academy of Sciences' "Biographical Memoir of Charles Benedict Davenport" by Oscar Riddle, Davenport's Eugenics creed was as follows: