The non-dual truth does not belong to any kind of theories. One must not be conditioned by scriptures and try to understand the ultimate reality. One needs the inner urge and capacity to grasp it. If one has no capacity to grasp and understand it, then he is not at ready for taking this mental journey of pursuit of truth he needs to prepare himself by inquiring well and try to grasp well and assimilate and understand it then only he must start his pursuit of truth.
Consciousness is the infinite ocean. When mind, which is in the form of universe rises and subsides from it. But when the mind subsides, the universe sinks with all its contents. On the boundless ocean of consciousness nothing exist other than itself.
Consciousness is the Self hidden in everyone, everywhere and in everything in all the three states. Those who, minds focused one-pointedly on the consciousness will realize the experience of diversity [waking or dream] is mere mirage.
Inquiry, analysis and reasoning lead one deeper into consciousness, passing from the universe to experience, and beyond experience to the wisdom of the Self, which is objectless awareness or consciousness without the objects.