Authors:

But he who knows what insanity is, is sane; whereas insanity can no more be sensible of its own existence, than blindness can see itself.

Apuleius (2015). “Delphi Complete Works of Apuleius (Illustrated)”, p.668, Delphi Classics
But he who knows what insanity is, is sane; whereas insanity can no more be sensible of its own existence, than blindness can see itself.