All the most essential and thinking part of thought is done without words or consciousness.
 Samuel Butler, The Note-Books of Samuel Butler (1912). copy citation

Context

“Thought pure and simple is as near to God as we can get; it is through this that we are linked with God. The highest thought is ineffable; it must be felt from one person to another but cannot be articulated. All the most essential and thinking part of thought is done without words or consciousness. It is not till doubt and consciousness enter that words become possible. The moment a thing is written, or even can be written, and reasoned about, it has changed its nature by becoming tangible, and hence finite, and hence it will have an end in disintegration.” source