Indeed, from the spiritual point of view these varṇas have to be understood in another way. He alone who is established in Brahman is a brāhmaṇa. He alone who defies the side of untruth is a kṣatriya. He alone who has the vyavasāyātmika Buddhi, able ever to engage in good enquiry, is a vaiśya. He alone who carries out steadfastness in karma and the practice of Satya is a śūdra. To attain humanness, these four vṛttis are most essential.