It is most easily described as that which you see and touch in your dream state (either sleeping or imagining).
Can you picture a rose? Or the face on the head of a dime?
If you can you just looked at some ethereal fluid.
Without you to percieve it it is like a candle without a flame.
And it is your perception that is the only true evidence of its existance.
This is where it starts. Your evidence. Tangible to the degree of your awareness.
If you are one of those many persons that do not recall their dreams.
Or if you think that you don't dream, don't worry.
I've put practices here that will assist this situation.
