How do you know if something is best.
Does time make you sure?
Does an unsure opposite make you sure?
Does success make you sure?
Does external affirmation make you sure?
Does ease make you sure?
Does progress make you sure?
Do these things bring you the peace and security?
Does someone’s promise make you sure?
How do you test something?

I think they could all have validity, its all middle ground though. 10% certain or 90% certain is still not certain.

My brain is never certain, but I believe with certainty. It is a heart thing? I can’t explain because that would be a brain thing.

A peace of mind is not easily had. A peace of heart is?