How do we think?

Well some may think its chemical reactions
And nerves at work
But what if it's much more
Than just your brain at work?

What if it's spirits
Of loved ones in your head
Family guiding you
Through this life, til death?

Maybe it's you
Hearing things that aren't really there
Your brain telling itself
If something is good or bad?

Or it could just be science
Something to do with nerves
But what if the thing we do everyday
Is something we'd never think it really is?