Commentary by Hazrat Inayat Khan:

People call love blind, but love in reality is the light of the sight. The eye can only see the surface; love can see much deeper. All ignorance is the lack of love. As fire when not kindled gives only smoke, but when kindled, the illuminating flame springs forth, so it is with love. It is blind when undeveloped, but, when its fire is kindled, the flame that lights the path of the traveler from mortality to everlasting life springs forth. The secrets of earth and heaven are revealed to the possessor of the loving heart, the lover has gained mastery over himself and others, and he not only communes with God but also unites with Him.