What is the true meaning of love?

“If you asked twenty good men today what they thought the highest of virtues, nineteen of them would reply unselfishness. But if you had asked almost any of the greatest Christians of old, he would have replied love. You see what has happened? A negative term has been substituted for a positive, and this is of more than philological importance. The negative idea of unselfishness carries with it the suggestion not primarily of securing good things for others, but of going without them ourselves as if our abstinence and not their happiness was the important point. I do not think this is the Christian virtue of love. The New Testament has lots to say about self-denial but not about self-denial as an end in itself. We are told to deny ourselves and to take up our crosses in order that we follow Christ.” From the “Weight of Glory” by C.S. Lewis

“Relationships are never about power, and one way to avoid the will to power is to choose to limit oneself- to serve for the benefit of another person.” From “The Shack”