Full Idea
Now I call that sense-object 'special' that does not admit of being perceived by another sense and about which it is impossible to be deceived.
Gist of Idea
Some objects of sensation are unique to one sense, where deception is impossible
Source
Aristotle (De Anima [c.329 BCE], 418a15)
Book Reference
Aristotle: 'De Anima (On the Soul)', ed/tr. Lawson-Tancred,H.C. [Penguin 1986], p.172