Just as the external energy consists of two parts, so Lord Visnu, the Supreme Personality of Godhead, assumes two forms to create the material world with the efficient and material causes

Expressions researched:
"Just as the external energy consists of two parts" |"so Lord Visnu, the Supreme Personality of Godhead, assumes two forms to create the material world with the efficient and material causes"

CC Adi-lila

Just as the external energy consists of two parts—the efficient cause (nimitta) and the material cause (upādāna), māyā being the efficient cause and pradhāna the material cause—so Lord Viṣṇu, the Supreme Personality of Godhead, assumes two forms to create the material world with the efficient and material causes.

CC Adi 6.14-15, Translation:

Just as the external energy consists of two parts—the efficient cause (nimitta) and the material cause (upādāna), māyā being the efficient cause and pradhāna the material cause—so Lord Viṣṇu, the Supreme Personality of Godhead, assumes two forms to create the material world with the efficient and material causes.