Lesson · 4 min Gentle
The Flying Man
In one line You know that you exist without looking; everything else still needs a look.
Ibn Sina asks you to imagine a person made all at once, hanging in the air, limbs not touching, eyes covered, no sound and no smell. Every sense is still. That person still knows that they exist. They do not need to see a hand to know there is a someone.
The lesson is not that the body is unreal, and it is not that anyone can float. Awareness of your own existence is not the same thing as a sensation. “I exist” is not a sight or a touch.
This lesson takes one practical point from it. The flying man knows one thing without looking: that he is. It is the only thing he knows that way. A rumor, a diagnosis, or a headline still needs a look.
Go deeper
Ibn Sina imagined a person created in mid-air, blindfolded and with limbs apart so that nothing touches them. Would they still know they exist? He thought yes, and that this self-awareness is not based on the body.
Descartes made a similar move six centuries later, and critics from both periods ask whether the experiment shows a separate self or only how we conceive of ourselves.
Sure, and still unlooked-at
A friend says a rumor is settled because the feeling of certainty is strong. Nothing has been checked. The feeling is real. The rumor is a separate question.
Ibn Sina’s floating person knows he exists and knows nothing else. Feeling that you exist is not evidence about the street.
Try this today Next time you feel certain, write what you have checked beyond the feeling.
Cite or share this lesson
A plain reference you can paste into notes or an essay:
Quest2Reason. “The Flying Man.” https://quest2reason.com/learn/lesson/flying-man. Accessed 13 November 2026.
Sources
- Stanford Encyclopedia of Philosophy, “Arabic and Islamic Psychology and Philosophy of Mind” — Section 3, on Ibn Sina, describes the floating man and his view of the self.
- Ibn Sina, The Cure (Kitab al-Shifa), On the Soul — The flying man: a person with every sense stilled still knows that he exists.
- Ibn Sina, Remarks and Admonitions (al-Isharat) — A shorter statement of the same experiment. Awareness of oneself is not a sight or a touch.
- Wikipedia, “Floating man” — Ibn Sina’s thought experiment.