Above all, people are disposed to mistake predicting troubles for causing troubles and even for desiring troubles: ‘if only’, they love to think, ‘if only people wouldn’t talk about it, it probably wouldn’t happen’. Perhaps this habit goes back to the primitive belief that the word and the thing, the name and the object, are identical. At all events, the discussion of future grave but, with effort now, avoidable evils is the most unpopular and at the same time the most necessary occupation for the politician. Those who knowingly shirk it, deserve, and not infrequently receive, the curses of those who come after.
—Enoch Powell. "Rivers of Blood" speech (1968)