CC Madhya 24.303
‘ātmārāmāś ca munayaś ca nirgranthāś ca’ bhajaya
The word sarva-samuccaye is significant here. It includes all classes of men — ātmārāmas, munis and nirgranthas. Everyone must engage in the service of the Lord. Taking the word api in the sense of ascertainment, there are, all together, sixty different meanings.