Consider the following verse from Srimad-Bhagavatam
bhidyate hṛdaya-granthiś chidyante sarva-saṁśayāḥ kṣīyante cāsya karmāṇi dṛṣṭa evātmanīśvare
Thus the knot in the heart is pierced, and all misgivings are cut to pieces. The chain of fruitive actions is terminated when one sees the self as master.
In the purport by Prabhupada, it is mentioned that
Attaining scientific knowledge of the Personality of Godhead means seeing one's own self simultaneously. As far as the identity of the living being as spirit self is concerned, there are a number of speculations and misgivings. The materialist does not believe in the existence of the spirit self, and empiric philosophers believe in the impersonal feature of the whole spirit without individuality of the living beings. But the transcendentalists affirm that the soul and the Supersoul are two different identities, qualitatively one but quantitatively different. .............
This paragraph explicitly talked about the three systems of belief
- Atheists : does not believe in the existence of the spirit self
- Advaitha : soul and supersoul has no difference
- Dvaitha : soul and the Supersoul are two different identities, qualitatively one but quantitatively different
What is meant by quantitatively different here?