The Personality of Godhead Sri Krsna, who is eternally an adolescent, is the primeval Lord, the source of all incarnations. He expands Himself in these six categories of forms to establish His supremacy throughout the universe

Expressions researched:
"The Personality of Godhead Sri Krsna, who is eternally an adolescent, is the primeval Lord, the source of all incarnations. He expands Himself in these six categories of forms to establish His supremacy throughout the universe"

CC Adi-lila

CC Adi 2.99, Translation:

“The Personality of Godhead Śrī Kṛṣṇa, who is eternally an adolescent, is the primeval Lord, the source of all incarnations. He expands Himself in these six categories of forms to establish His supremacy throughout the universe.