Science of Mine

I have to make a guess
The sun that's in the skies
Is nothing more than light
Reflected from your eyes;
And when you close them
To go to sleep,
The sun itself does seep
Into the horizon to rest there,
Until it's time for you to rise.

I have no way to test
This theory in my head
So I decide to choose
To believe what I said;
And if it turns out
To not be true,
The facts just will not do
As all the warmth keeping me alive,
Is in your arms and heart instead.