"Pity like a naked new-born babe striding the blast."

From Macbeth by William Shakespeare

 

MACBETH

And pity, like a naked new-born babe, 

Striding the blast, or heaven's cherubins, horsed 

Upon the sightless couriers of the air, 

Shall blow the horrid deed in every eye, 

That tears shall drown the wind.

Act I, Scene 7

 

This could constitute a subtle, even unconscious, admission of guilt.