“What are the facts? Again and again and again – what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history” – what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!”

“What is meaningful cannot in fact be isolated…. We achieve understanding within a circular movement from particular facts to the whole that includes them and back again from the whole thus reached to the particular significant facts.”

“The people who criticize me are ignorant of what history is, because the very fact that the student of history chooses what to include and what not to include in his work, is proof that history is never objective.”

“There seem to be only two kinds of people: Those who think that metaphors are facts, and those who know that they are not facts. Those who know they are not facts are what we call "atheists," and those who think they are facts are "religious." Which group really gets the message?”

“Never let yourself be diverted, either by what you wish to believe, or what you think could have beneficent social effects if it were believed; but look only and solely at what are the facts.”

“What happens is fact, not truth. Truth is what we think about what happens.”