"No hope anywhere: I have never been in a country where you are more aware all the time of hate. Friendship there is skin deep — a protective gesture. That motion of greeting you see everywhere upon the street, the hands outstretched to press the other's arms, the semi-embrace — what is it but the motion of pinioning to keep the other man from his gun? There has always been hate, I suppose, in Mexico, but now it is the official teaching: it has superseded love in the school curriculum. Cynicism, a distrust of men's motive, is the accepted ideology."
January 1, 1970
https://en.wikiquote.org/wiki/Mexico