This is perhaps a useful way to understand Non-Duality. We think of the world as being outside of us, and we are on the inside. If we believe we are the body, then we still think of ourselves as thinking from the inside of the body. If we believe we are a soul, we may think that we are the soul inside the body. If we think that we are consciousness, then we see the thoughts as inside our consciousness and the body and world as outside of our consciousness. That's a generalisation, but people often think along those lines.

However, in the Non-Duality understanding there is no inside or outside. All that we know is Consciousness. The apparently internal and external 'worlds' appear in Consciousness. The thoughts, feelings, emotions, sensations and perceptions that are experienced are all within Consciousness. Nothing is ever truly experienced outside of Consciousness.

So from that perspective what appeared to be the inside and the outside are found to both appear inside Consciousness. But we need to go a step further and recognise that 'inside' Consciousness isn't really accurate. When everything is 'inside' then there is no 'inside'. When 'outside' doesn't exist then the word 'inside' has no meaning. It just is as it is.

This is Non-Duality. There are not two. The opposites that we believe to be real are not really real. When we withdraw inside to the heart of experience we find that everything is 'inside' Consciousness or Awareness, and then there is no dualistic term by which 'inside' can hold any accuracy. So we recognise the duality, then go to the heart of where we perceive this from and realise that really there is no duality. The Heart is the Whole.

Similarly, we can say that when it is recognised that there is only Consciousness or Awareness, then these terms mean nothing. We can switch to the term What Is. Even the term 'Being' loses its meaning when all there is is Being. So the Truth is inexpressible. When we try to explain it we hide it somewhat. Yet it is never hidden.