You must not think of the light of the sun as the true Light of God. It is a reflection of the true Light. That other Light, that we can neither know nor comprehend, is so subtle, so highly potent that, for us . . . it is darkness.
If you maintain a feeling of compassion, loving kindness, then something automatically opens your inner door. Through that, you can communicate more easily with other people. And that feeling of warmth creates a kind of openness. You'll find that all human beings are just like you, so you'll be able to relate to them more easily. That gives you a spirit of friendship.