Love

“Love is the most great law that ruleth this mighty and heavenly cycle, the unique power that bindeth together the divers elements of this material world, the supreme magnetic force that directeth the movements of the spheres in the celestial realms. Love revealeth with unfailing and limitless power the mysteries latent in the universe.”
(‘Abdu’l-Bahá, from Selections from the Writings of ‘Abdu’l-Bahá.
http://bahai-library.com/books/gandhi/node35.html)