Related:

• It is only with the heart one can see clearly; what is essential is invisible to the eye.
  -- The Fox, 'The Little Prince...
• It is only with the heart that one can see rightly
  what is essential is invisible to the eye. Antoine de Saint-Exupery...
• It is only through the heart that one can see rightly
  what is essential is invisible to the eye. -- Antoine de Saint-Exupery...
• The eye sees only what the mind is prepared to comprehend. -- Henri Bergson (1859-1941)
• What the eye beholds And the heart covets, Let the hand boldly seize!.
• The eye of the intellect "sees in all objects what it brought with it the means of seeing.
• Q: What's red and invisible? A: Bloody Nothing!
• The eye sees not itself but by reflection, by some other things. -- William Shakespeare
• Fry: What's with the eye?