what did he theorize about dreaming?
He explained that dreams do not involve actually sensing a stimulus. In dreams, sensation is still involved, but in an altered manner.He also explains that when a person stares at a moving stimulus such as the waves in a body of water, and then look away, the next thing they look at appears to have a wavelike motion.
Aristotle
Dreams do not involve actually sensing a stimulus. In dreams, sensation is still involved, but in an altered manner. Aristotle explains that when a person stares at a moving stimulus such as the waves in a body of water, and then look away, the next thing they look at appears to have a wavelike motion. When a person perceives a stimulus and the stimulus is no longer the focus of their attention, it leaves an impression. When the body is awake and the senses are functioning properly, a person constantly encounters new stimuli to sense and so the impressions of previously perceived stimuli are ignored. However, during sleep the impressions made throughout the day are noticed as there are no new distracting sensory experiences. So, dreams result from these lasting impressions. Since impressions are all that are left and not the exact stimuli, dreams do not resemble the actual waking experience. During sleep, a person is in an altered state of mind. Aristotle compares a sleeping person to 
what is the fallacy of the argumentum ad hominem That it is not always fallacious, and that in some instances, questions of personal conduct, character, motives, etc., are legitimate and relevant to the issue, as when it directly involves hypocrisy, or actions contradicting the subject's words. what does that last phrase mentioned above mean? It is an argumentum(a quarrel; altercation) ad hominem, refers to several types of arguments, not all are fallacious. where does this phrase come from? The ancient Greek. are there any philosophers who have written about this? Yes, Greeks. Aristotle, Sextus Empiricus, John Locke, Charles Leonard Hamblin, Douglas N. Walton. who is the first mentioned person? He was a Greek philosopher and polymath during the Classical period in Ancient Greece. has he written any book? He has written on subjects including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics, politics, and government.
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Aristotle [SEP] Dreams
Aristotle describes sleep in "On Sleep and Wakefulness". Sleep takes place as a result of overuse of the senses or of digestion, so it is vital to the body. While a person is asleep, the critical activities, which include thinking, sensing, recalling and remembering, do not function as they do during wakefulness. Since a person cannot sense during sleep they can not have desire, which is the result of sensation. However, the senses are able to work during sleep, albeit differently, unless they are weary. Dreams do not involve actually sensing a stimulus. In dreams, sensation is still involved, but in an altered manner.