The breaking of “the most precious square of sense” means the 
isolation of one sense from another by separate intensities with 
the ensuing irrationality and clash among wits and persons and 
functions. This breaking of the ratios among wits (or senses) 
and persons and functions is the theme of the later 
Shakespeare.

     As Cordelia observes the flash agility of those specialists 
in filial piety, Goneril and Regan, she says:

                                         . . . I am sure my love’s
     More richer than my tongue.

Her rational fullness is as nothing to the specialism of her 
sisters. She has no fixed point of view from which she can 
launch bolts of eloquence. Her sisters are cued for particular