If you're treated a certain way you become a certain kind of person. If certain things are described to you as being real they're real for you whether they're real or not.
Source: A Dialogue, (1973; with Nikki Giovanni), from a conversation in London, 4 Nov 1971.
-- James Baldwin, (Aug 2 1924-1987), US novelist, essayist; He was a noted spokesman for American blacks in 1950s-60s.