There is a kind of sleep that steals upon us sometimes , which, while it holds the body prisoner, does not free the mind from a sense of things about it, and enable it to ramble as it pleases. So far as an overpowering heaviness, a prostration of strength, and an utter inability to control our thoughts or power of motion can be called sleep, this is it; and yet we have a consciousness of all that is going on about us, and even if we dream, words which are really spoken, or sounds which really exist at the moment, accommodate themselves with surprising readiness to our visions, until reality and imagination become so strangely blended that it is afterwards almost a matter of impossibility to separate the two. Oliver Twist

My body was like a harp and her words and gestures were like fingers running upon the wires. Dubliners

Remember that to change thy opinion and to follow him who corrects thy error is as consistent with freedom as it is to persist in thy error. Book VIII

The separation of psychology from the premises of biology is purely artificial, because the human psyche lives in indissoluble union with the body. Factors Determining Human Behavior