The Supersoul, the Supreme Personality of Godhead, is the source of light.
Bhagavad Gita 13.18,
The aesthetic sense of the Lord is manifested in the artistic, colorful creation of varieties of birds like the peacock, parrot and cuckoo.
Srimad Bhagavatam 2.1.36,
The Lord can be known by the mercy of the Lord only, and by no other means.
Srimad Bhagavatam 1.11.39,