"This Whole Life is a Hallucination"
In Buddhism, the phantasmagoric array of perceptions that make up our conscious experience is called "Maya".
The external sensory input, that our body processes as sight, sound, touch, taste, and smell, create the illusion in our minds of independent existence. Actually, experienced phenomena are manifestations of The All- the underlying, pervasive source of the reality that we perceive.
The light & sound show going on inside our head is a hallucination of sorts, a mere representation of the energies and processes that cause them. We can never know "reality" as it is- only how it is translated through the filter of our senses into our consciousness.