Nothing Exists

“Nothing exists except atoms and empty space; everything else is opinion.” - Democritus (Greek philosopher, 460-370 BCE)

Matter and energy are really forms of the same thing. (See E=mc².)

The people in my reality are made of atoms, pure energy.
The people in my dreams are made of thoughts, synapses firing, pure energy.

Are they really different?

Nothing exists except Tao.