St. Bernard of Clairvaux

This is from a sermon by St. Bernard of Clairvaux taken from the church bulletin:

Love is sufficient of itself; it gives pleasure by itself and because
of itself. It is its own merit, its own reward. Love looks for no
cause outside itself, no effect beyond itself. Its profit lies in the
practice. Of all the movements, sensations and feelings of the soul, love
is the only one in which the creature can respond to the Creator and make some
sort of similar return however unequal though it be. For when God loves,
all he desires is to be loved in return. The sole purpose of his love is
to be loved, the knowledge that those who love him are made happy by their love
of him.