What Is Love?

Answering this question depends on how you look at it. 

From the objective point of view, (remember the Archimedean Point), love is an evolved characteristic of the human species that sustains infants until they have matured to a degree of independence, in time becoming loving friends, spouses, parents, citizens, to provide mutual support and a benign home for the next generation. Love is an instinct encoded in the genes, located in structures of the brain, mediated by neurotransmitters, hormones and pheromones, responsive to experience. Love is the motive that ensures we survive and thrive together.

Subjectively, the experience of love is two-fold, as the loved one and as the lover. Poets and philosophers lend words to the pleasure, bliss, suffering and pain we endure because we love, are loved, love not, or are not loved. Yet one word is enough, because it invokes what we know and understand beyond words. 

Love is love.
You know what I mean;
and as we live,
we have more love to learn.

What Are We Missing
What is love? 
Next: What should we love?
         Is love ever wrong? 
         Is there more to the mystery? 

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Love: Wikipedia, 8600 words to explain one.