(it's actually from a quote by Eleanor Roosevelt)
The foundation of Sufism - a mystical branch of Islam - is love. Such love is celebrated in the beautiful poetry of Rumi, Hafiz and others. Sufi Master Ibn 'Arabi wrote, "I practice the religion of Love; in whatsoever directions its caravans advance, the religion of Love shall be my religion and my faith."
Descartes philosophized, "I think, therefore I am." For me, it's "I love, therefore I am." Albert Camus said, "I know of only one duty, and that is to love." As for me, I'm alive to live. And I live to love.