History is not a science; it is an art, and one can succeed in that art only through the exercise of his faculty of imagination.
 Anatole France, The Crime of Sylvestre Bonnard (1881). copy citation

Context

“And in saying this, Monsieur Bonnard, I am supposing that the historian has positive evidence before him, whereas in reality he feels confidence only in such or such a witness for sympathetic reasons. History is not a science; it is an art, and one can succeed in that art only through the exercise of his faculty of imagination.” Monsieur Gelis reminds me very much at this moment of a certain young fool whom I heard talking wildly one day in the garden of the Luxembourg, under the statue of Marguerite of Navarre. But at another turn of the conversation we find ourselves face to face with Walter Scott, whose work my disdainful young friend pleases to term” source