A Thin Veil

What is this world? A perfect illusion. Dreams within dreams covered by a sheet of Deep Sleep.
What will happen, when one day we wake up and this bubble of illusion will burst. 
Dark fog in our mind will turn into dew drops and will fall into a nameless sea.
True and false, illusion and reality, right and wrong, light and shadow; they all have a thin veil between them. 
When the veil falls, What is the difference?