This is called
Vishistadvaita or qualified Monism. It is also my path and my experience.
To conceive of 'That' or 'Brahman', one must also understand the 'Maya' or that which is
not Non-Duality and thus, Non-Duality becomes Duality within itself.
अद्वैतं परमार्थो हि द्वैतं तद्भेद उच्यते ।
तेषाम् उभयथा द्वैतं तेनायं न विरुद्ध्यते ॥ १८ ॥
advaitaṃ paramārtho hi dvaitaṃ tadbheda ucyate |
teṣām ubhayathā dvaitaṃ tenāyaṃ na viruddhyate || 18 ||
As non-duality is the ultimate Reality, therefore duality is said to be its effect (Kārya or Bheda). The dualists perceive duality either way (i.e., both in the Absolute and in the phenomena). Therefore the non-dual position does not conflict with the dualist’s position.
- Mandukya Upanishad 3:18
During my own 'Dark Night of the Soul' in which I tried to reconcile Non-Duality within the whole experience of it, I thought about Adi Shankaracharya - the greatest proponent of Advaita Vedanta (Non-Dualism as the end of all Knowledge) and why was it Adi Shankaracharya could be such a huge Shiva Devotee?...i.e. loving and worshiping a Divine God...in full-on 'Duality mode'...after it was that he expounded the very nature of Non-Duality?...made sense it did NOT!
https://image.slidesharecdn.com/adis...?cb=1239344596
Yet, I also found myself in
exactly the same position. I had realised Non-Duality and yet the whole relation between the non-egoic Self and Brahman was still a Dual one - how come was this? I had agonised over it for years...how could a Supreme Consciousness even exist apart from ourselves when we were also that Supreme Consciousness?
I nearly went totally insane (literally) trying to reconcile the Duality within the Non-Duality, in the false thought - as per Advaita, that Non-Duality cancelled out or negated Duality by being Non-Dual...however, Non-Duality fully
incorporates Duality in itself so it can BE Non-Dual!
This led me to a philosophy called Achintya bhedabeda tattva which basically means "the inconceivable difference of indifference". It is how people can 'be IT' and still 'Love IT' simultaneously, without Duality NOR Non-Duality even existing, because it just IS.
https://en.wikipedia.org/wiki/Bhedabheda
In Hinduism, the saint Ramanuja proposed the whole idea and related it to Brahman (Non-Duality) in the form of Ishwara (Supreme Consciousness) and Chaitanya Mahaprabhu perpetuated it during the 14th Century and related it to the worship of Lord Krishna as an avatar of Lord Vishnu.
I believe I am the only one who is applying it to the Shaivite philosophy when, you see all Shaivites teaching 'Thou art Shiva (Shivoham)' but still have statues of Shiva in their temples and pray to Shiva as the external entity of 'Mahadeva'.
People may split hairs over this one all they like because whatever they say will just be within the framework of Duality or Maya anyway and only go to illustrate what I am saying by direct example.