Love…
…is the answer to the question: “What is the most powerful force on Earth? Every human and everything he or she does is shaped by love’s abundance or its lack.

From the song “The Power of Love” by Huey Lewis And The News
The power of love is a curious thing,
Make a one man weep,
make another man sing.
Change a hawk to a little white dove,
More than a feeling that’s the power of love.
Tougher than diamonds, rich like cream
Stronger and harder than a bad girl’s dream,
Make a bad one good make a wrong one right
Power of love that keeps you home at night.
You don’t need money, don’t take fame
Don’t need no credit card to ride this train.
It’s strong and it’s sudden
and it’s cruel sometimes,
But it might just save your life.
That’s the power of love.