Today we celebrate the memory of a great Christian, Dr. Martin Luther King, Jr. (January 15, 1929–April 4, 1968). Dr. King used Christian social ethics and the New Testament concept of “love” heavily in his writings and speeches, As a dedicated follower of Jesus he understood the power of Agape (love) to move mountains.
Here's an excerpt from his famous essay, written in 1958, "An experiment in love": "Agape means understanding, redeeming good will for all men. It is an overflowing love which is purely spontaneous, unmotivated, groundless, and creative. It is not set in motion by any quality or function of its object… Agape is disinterested love. It is a love in which the individual seeks not his own good, but the good of his neighbor. Agape does not begin by discriminating between worthy and unworthy people, or any qualities people possess. It begins by loving others for their sakes. It is an entirely “neighbor-regarding concern for others,” which discovers the neighbor in every man it meets. Therefore, agape makes no distinction between friends and enemy; it is directed toward both. If one loves an individual merely on account of his friendliness, he loves him for the sake of the benefits to be gained from the friendship, rather than for the friend’s own sake. Consequently, the best way to assure oneself that love is disinterested is to have love for the enemy-neighbor from whom you can expect no good in return, but only hostility and persecution."