Love is the perception of union and is achieved by equivalence or sameness of attributes. The law of equivalence of form is the only law according to which the entire universe moves and brings everything that exists to the Creator. Kabbalah says that the greatest pleasure in the world is the perception of union with the Creator. Our earthly love is merely a weak reflection of this higher love. We do not perceive what it means to be filled by the Creator. This is above all other perceptions.
Courtesy of http://www.youtube.com/watch?v=8bdv88mw-tQ