Newton's great generalization, which he called the "third law of motion," was that "Action and reaction are always equal to each other;" and that law has been one of the most pregnant of all truths about the mystery of force;--one of the brightest windows through which modern eyes have looked into the world of Nature.
Phillips BrooksPray for and work for fullness of life above every thing; full red blood in the body; full honesty and truth in the mind; and the fullness of a grateful love for the Saviour in your heart.
Phillips Brooks