He hath not learnt the first precept of philosophy, which is, Know thyself; for whilst he braggeth and boasteth that he can discern the least mote in the eye of another, he is not able to see the huge block that puts out the sight of both his eyes.

This is such another Polypragmon as is by Plutarch described.

He is of the nature of the Lamian witches, who in foreign places, in the houses of strangers, in public, and amongst the common people, had a sharper and more piercing inspection into their affairs than any lynx, but at home in their own proper dwelling-mansions were blinder than moldwarps, and saw nothing at all.

For their custom was, at their return from abroad, when they were by themselves in private, to take their eyes out of their head, from whence they were as easily removable as a pair of spectacles from their nose, and to lay them up into a wooden slipper which for that purpose did hang behind the door of their lodging.
Panurge had no sooner done speaking, when Herr Trippa took into his hand a tamarisk branch.

In this, quoth Epistemon, he doth very well, right, and like an artist, for Nicander calleth it the divinatory tree.