In the following video David Lynch describes consciousness. He says, "if you have a golf-ball sized consciousness then when you read a book you will have a golf-ball sized understanding. If you could expand that consciousness, then when you read the book you will have more understanding. It's consciousness. And there is an ocean of pure, vibrant consciousness inside each one of us and it's right at the source of thought. Transcendental Meditation is a simple and easy, effortless technique that allows any human being to dive within, experiencing subtler levels of mind and intellect, transcending to experience this ocean of pure consciousness."
Another quote from David Lynch from his book 'Catching the Big Fish':