how do we know what we think until we see what we say?

How do we know what we think until we see what we say? Writing is the human expression of feelings and thoughts. Our brain is not as simple as a clean sheet of paper. millions of calculations and thoughts are going on constantly and it is hard to specifically analyze those thoughts while in our mind. By giving those thoughts a visual meaning that can then be manipulated we realize things our brain was too clouded to see. That is the meaning of this saying. And the beauty of the saying is that you cant understand it the first time you read it without writing it down.