Prabhupāda: So these five expansions, śrī-kṛṣṇa-caitanya prabhu nityānanda-śrī-advaita gadādhara śrīvāsādi-gaura... Kṛṣṇa appeared in five expansions. Sri Kṛṣṇa Caitanya, Lord Caitanya, is Kṛṣṇa Himself. And Prabhu Nityānanda, His immediate expansion. Just like Balarāma. Kṛṣṇa and Balarāma. And Advaita is incarnation. And Gadādhara is internal potency. And Śrīvāsa, marginal potency. And there is another potency, external potency. The external potency is not there. External potency means by which this material world is manifested.