“Yet again - visible and invisible. The panic of loneliness - not physical, far more moral - arises from the fact that every lonely person is wearing a tarnkappe, a magic hood, (in German fairy tales, a magic cap which makes the wearer invisible) against his will: which is tantamount to saying: "If people don't bother about me, it's because nobody is seeing me - seeing me. I'm just a piece of furniture in their eyes." … Newcomers in a strange world suffer this fate especially, what's more in a doubly unpleasant way: first because no one takes any notice of them since they don't belong, i. e. they're nobodies, yet at the same time they're conspicuous, in the way, a nuisance, desperately conscious of being just awkward lumps of furniture.”

Notes Toward a Supreme Fiction (1942), It Must Be Abstract
Context: p>It must be visible or invisible,
Invisible or visible or both:
A seeing and unseeing in the eye.The weather and the giant of the weather,
Say the weather, the mere weather, the mere air:
An abstraction blooded, as a man by thought.</p

Treason (1988)

The She-Ancient, in Pt. V
Source: 1920s, Back to Methuselah (1921)
Context: Art is the magic mirror you make to reflect your invisible dreams in visible pictures. You use a glass mirror to see your face: you use works of art to see your soul. But we who are older use neither glass mirrors nor works of art. We have a direct sense of life. When you gain that you will put aside your mirrors and statues, your toys and your dolls.

Author's prefaces to the First Edition.
(Buch I) (1867)

Notes Toward a Supreme Fiction (1942), It Must Be Abstract

Clary and Jace, pg. 44
The Mortal Instruments, City of Bones (2007)
Source: City of Bones / City of Ashes / City of Glass / City of Fallen Angels / City of Lost Souls
Context: "Do you want to tell me what this is about, or should I just call the police?"
"And tell them what?" Jace said witheringly. "That invisible people are bothering you? Trust me, little girl, the police aren't going to arrest someone they can't see."

Source: Saturday Night and Sunday Morning

Source: Darkness Falls