43. And on account of the mantra.
'One part (quarter) of it are all beings, three feet (quarters) of it are the Immortal in heaven' (Kh. Up. III, 12, 6)--on account of this mantra also the soul must be held to be a part of Brahman. For the word 'foot' denotes a part. As the individual souls are many the mantra uses the plural form 'all beings.' In the Sûtra (42) the word 'part' is in the singular, with a view to denote the whole class. For the same reason in II, 3, 18 also the word 'atman' is in the singular. For that the individual Selfs are different from the Lord, and are many and eternal, is declared by texts such as 'He who, eternal and intelligent, fulfils the desires of many who likewise are eternal and intelligent' (Ka. Up. II, 5, 13). Since thus the plurality of the eternal individual Selfs rests on good authority, those who have an insight into the true nature of Selfs will discern without difficulty different characteristics distinguishing the individual Selfs, although all Selfs are alike in so far as having intelligence for their essential nature. Moreover the Sûtra II, 3, 48 directly states the plurality of the individual Selfs.