What is Love?

What is Love? Its definition may vary according to one's perspective, eg. that of a lover, parent, sibling, friend. But there's one version which I feel is most universal, complete and grandiose - the one found in the Bible:

Love is patient, love is kind. It does not envy, it does not boast, it is not proud. It is not rude, it is not self-seeking, it is not easily angered, it keeps no record of wrongs. Love does not delight in evil but rejoices with the truth. It always protects, always trusts, always hopes, always perseveres.
[1 Corinthians 13:4-7 (New International Version)]

For a most enlightening yet down-to-earth elaboration of the above definition, check out the book "The Practice of the Love of Jesus Christ" by St Alphonsus Liguori. I've read it many times and every time, it has never failed to touch and inspire me!