CC Madhya 24.210
ūnaviṁśati artha ha-ila mili’ ei dui
“I have already spoken about thirteen meanings [of the ātmārāma verse]. Now there are six more. Combined, these make nineteen.
The six further meanings of the verse are based on the following meanings of the word ātmārāma: (1) mental speculators (vide verse 165), (2) those engaged in different types of endeavor (vide verse 168), (3) those who are patient and sober (vide verse 174), (4) those who are intelligent and learned scholars (vide verse 187), (5) those who are intelligent but illiterate and foolish (vide verse 187), and (6) those who are conscious of their eternal servitorship to Kṛṣṇa (vide verse 201).