If love is the greatest power on earth, the force that sustains human life — which in some sense it certainly is — why hasn't love's radiant warmth been able to banish the darkness engulfing the world, and transform and uplift this earth? Why is it so hard for love to permeate the dense fabric of human relationships? If love is our main source of happiness and joy, why is it so hard to open to it fully and let it govern our lives? What is the problem?
— John Welwood, Perfect Love, Imperfect Relationships