“That conflict between the reach for the divine and the lure of earthly things was to be the central problem of the Middle Ages.”

To put on the garment of legitimacy is the first aim of every coup.

When the gap between ideal and real becomes too wide, the system breaks down.

The Hundred Years’ War, like the crises of the Church in the same period, broke apart medieval unity.

Books are humanity in print.

Dead battles, like dead generals, hold the military mind in their dead grip.

In individuals as in nations, contentment is silent, which tends to unbalance the historical record.

The conduct of war was so much more interesting than its prevention.

In the United States we have a society pervaded from top to bottom by contempt for the law.

The poets have familiarized more people with history than have the historians.

No more distressing moment can ever face a British government than that which requires it to come to a hard, fast and specific decision.

To explain strange and irregular phenomena of nature, haphazard events and, above all, irrational human conduct. They exist to bear the burden of all things that cannot be comprehended except by supernatural intervention or design.

The costliest myth of our time has been the myth of the Communist monolith.

A phenomenon noticeable throughout history regardless of place or period is the pursuit by governments of policies contrary to their own interests.

Words are seductive and dangerous material, to be used with caution.

For me, the card catalog has been a companion all my working life. To leave it is like leaving the house one was brought up in.

To a historian libraries are food, shelter, and even muse.