You believe.

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I know.

You may believe you saw a ghost, an angel or some godly force.

I know that our minds can see things that are not there. Our minds can make things up. Our minds can make us believe things that are clearly not possible.

I can prove that I know.

Your mind is telling you that the red square is closer than the blue. That is clearly not the case.

Now I am going to make you see things that are not there. Ghostly things.

You see things between the black squares that are not there in reality.

They are only optical illusions say you. Maybe. And yes they are 'just' optical illusions but they prove that we can indeed see things that are not there. This marks the difference between knowing and believing. To understand the universe, one must understand the mind first.

Some can see four dogs in this picture. Lol.