Mistress, look on me, Behold the window of my heart, mine eye, What humble suit attends thy answer there. Shakespeare.Loves Labours Lost, Act V. Scene 2. (Biron to Maria.)
It is the soul itself which sees and hears, and not those parts which are, as it were, but windows to the soul. Yonges Cicero.Tusculan Disp., Book I. Div. 20.