Henry continues to struggle toward a scientific understanding of history. He now sees lines of force in the actions of mankind where he once saw lines of will. Henry reconsiders the concepts of unity and multiplicity and wonders if these apparent opposites may not be the same thing. He studies this possibility within the concept of the kinetic theory of gases with startling results. Placing a great deal of importance on unity and multiplicity, he begins to write his Mont-Saint-Michel and Chartres (privately printed 1904); he will ultimately think of The Education of Henry Adams (first private edition published in 1907) as its companion piece.
