states of mind

The mere fact that we can talk straight ahead and get the grammar in order shows that we must be doing a lot more rational planning about the process of talk than we have to notice in detail. I do not want to make any holy mystery out  the subconscious of the mind. A person may think very badly in those regions. But if we were not thinking there at all we could not even engage in connected speech. ––William Empson in The Complex Structure of Words