Rich Mullins, in weekend retreats he & Beaker ran, many years ago, used to quote C.S. Lewis’ definition of love:
“Love is desiring the best for someone else, and being willing to do something about it.”
For the life of me, my Google-fu is weak, and I cannot find the original source (which I’m sure has been paraphrased). Even so, this is the best, most concise definition of love (agape) I have found.
Can anyone do better than this quote?