Popular motivational speaker Wayne Dyer (Wikipedia article) claims that he is not the source of his own writing and speaking. You may watch the full length presentation, in which I found the following clip at Youtube. The excerpt below occurs from 1:55 to 3:29 on the full video.
“…I finally realized that I don’t write the books—that there is an energy that is working through me, whether you call it Source or God or Spirit… ”
He goes on to describe how words once flowed from a table into his hand upon the table, and from there, through his heart and over to his writing hand, where he wrote them into the book he was composing at the time.