An Illusion (n.) also lies within the world-horizon: whatever is doubtful or unreal is so only in relation to what actually is.
An Illusion (n.) is normally tolerable because each one proclaims a deeper truth and fits the harmony of the whole; nothing guarantees it must — experience might dissolve into illusion everywhere.
An Illusion (n.) is undone by changing the sense of what was perceived: one saw a man, then on touching him had to reinterpret him as a mannequin.
An Illusion (n.) is never pure loss: so much illusion, so much being covered up and falsified by it — being that can therefore be sought and, approximately, found.
An Illusion (n.) is said of the appearing itself: looking into the stereoscope we call the pyramid "nothing" — so we must have the courage to take the phenomenon exactly as it presents itself, nothingness and all, and describe it honestly.
An Illusion (n.) belongs to the theory of truth: the way to knowledge leads through errors even at the lowest level, so for a phenomenology of "true reality" the phenomenology of "vain illusion" is wholly indispensable.