Let's answer CARM's Questions for Atheists

[Neo-Scholastic]

It's called the Negative Way. According to this mystical tradition any attribution you attempt to assign falls so far short that it highlights the ineffability of God. Try it sometime. It's actually a very illuminating approach to meditation.

And what's the criteria for determining it has fallen short?

The criteria is your own experience. You basically perform a relaxation response exercise then think of any attribute and state it in your mind, then do another and another, etc. While doing so you reflect on each. For example say to yourself,"God is not in space, God is not in time, God is not..."