Researchers dealing with Erasmus’s worldview, particularly in relation to ethnic prejudices, have underrated the significance of his vast collection of adages (Chiliades adagiorum, Adagia) as a source reflecting Erasmus’s voice and opinions. However, one should not ignore Erasmus’s essentialist ethnic assertions in the Adagia, particularly with regard to Black Africans. Thus, Africa always produces something evil (III vii 9), and Erasmus’s comment: “because… monsters were exported from there to Rome. From this sense it can be turned to apply to the customs and mentality of a race; for if a region is prolific in poisons, the people who inhabit it are malevolent by nature.” This chapter shows that these are not occasional lapses of judgment but rather a normal pattern of ethnic prejudicial stereotyping often present in Erasmus’s adages.