We work with what we know

I like these words - we work with what we know in this life - read it in a book. I find it so simple, yet so true. There is only so much that we can know at any one time, as much as we try to know, and that is the framework of which we make our decisions on. And what we know is the truth to us, the truth within the context of our framework. What we don't know, we can't even begin to even comprehend. I know I may not make sense here, but I think I know what I mean. Of course, I am working with what I know here.