CC Madhya 25.36
ānanda-mātram avikalpam aviddha-varcaḥ
paśyāmi viśva-sṛjam ekam aviśvam ātman
bhūtendriyātmakam adas ta upāśrito ’smi
This is a quotation from Śrīmad-Bhāgavatam (3.9.3). This verse was spoken by Lord Brahmā, who perfectly realized the Supreme Personality of Godhead after meditating upon the Lord within the water of the Garbhodaka Ocean. Brahmā realized that the form of the Lord is completely spiritual. This is certainly a better understanding of the Absolute Truth than the impersonal understanding.