Sc. 2.
"As infants empty of all thought."
Editors read 'infants' in the genitive. In either case I think to has been omitted before it.
"Beshrew the witch! with venomous wights she stays
As tediously as hell."
No sense has been, or, I think, can be made of 'venomous wights.' I think 'venomous' must be an error.
"Good, good, my lord; the secrets of Nature have not