History is the long struggle of man, by exercise of his reason, to understand his environment and to act upon it. But the modern period has broadened the struggle in a revolutionary way. Man now seeks to understand, and act on, not only his environment, but himself; and this has added, so to speak, a new dimension to reason and a new dimension to history.
Edward Hallett Carr, Robert William Davies (1986). “What is history?: the George Macaulay Trevelyan lectures delivered in the University of Cambridge January-March 1961”
