Expect Contradictions

Contradictions, however, are part of life, not merely a matter of conflicting [historical] evidence. I would ask the reader to expect contradictions, not uniformity. No aspect of society, no habit, custom, movement, development, is without cross-currents. … No age is tidy or made of whole cloth.

—Barbara W. Tuchman, A Distant Mirror: The Calamitous 14th Century, xxiii