|History is what happened, not what we wish had happened or what a theory says should have happened. One of the reasons for the great value of history is that it allows us to check our current beliefs against hard facts from around the world and across the centuries. But history cannot be a reality check for today’s fashionable visions when history is itself shaped by those visions. When that happens, we are sealing ourselves up in a closed world of assumptions.
– Thomas Sowell (1930-)