All State education is a sort of dynamo machine for polarizing the popular mind; for turning and holding its lines of force in the direction supposed to be most effective for State purposes. Henry Adams
..the feeling that pervades a city presented itself in the qualities of lines of force. Ernst Ludwig Kirchner
Early man recognised these lines of force and marked them out on the landscape with, well, any old thing, really standing stones, ditches, mounds, tumps, sacred wells, and that sort of thing. And, later on, with churches, market crosses, crossroads, and whatnot. Stephen R. Lawhead