“The educated man, habitually, almost without noticing it, sees the present as something that grows out of a long perspective of centuries. In my the minds of my RAF hearers this perspective simply did not exist. It seemed to me that they did not really believe that we have any reliable knowledge of historic man. But this was often curiously combined with a conviction that we knew a great deal about Prehistoric Man: doubtless because Prehistoric Man is labelled "Science" (which is reliable) whereas Napoleon or Julius Caesar is labelled as "History" (which is not.”