Clarified, Updated Questions for Chris

I am not asking you these questions to be leading, or to debate your answers. Nor am I asking them of anyone else but you. I politely request that you BRIEFLY answer these off the top of your head and in your own words. If you are still forming positions on these matters, just let me know.

Can there be anything that exists that is not physical?
Do you hold any beliefs for which you are unable to furnish irrefutable proof?
What is knowledge?
Is knowledge possible?
What is truth?
What are the proper ways to go about belief formation?
What is science?
What is religion?

Thanks cuz.