In the third part, he focuses on how irrational stereotypes influence the way we come to know things. “The most subtle and pervasive influences are those that create and maintain the repertoire of stereotypes. We are told about the world before we see it. We imagine most things before we experience them. And these preconceptions, unless education has made us acutely aware, profoundly govern the entire process of perception. They mark certain objects as familiar or strange, emphasizing the difference, so that what is slightly familiar is seen as very familiar, and what is a little strange as distinctly foreign” (Lippmann