Meaning of “Hell is empty and all the devils are…”

The Picture of Dorian Gray, 1891 edition, Chapter 17; Lord Henry answers the Duchess of Monmouth’s question “What are you?” with “To define is to limit.”

Act 3, Scene 1; Hamlet weighs existence against suffering and uncertainty.

Nature (first published 1836), Chapter I, “Nature,” in James Munroe and Company’s 1849 new-edition witness represented by Project Gutenberg #29433. A scan of the same 1849 J. Munroe edition places “Nature always wears the colors of the spirit” on printed page 9. Emerson is arguing that inward condition colors the experience of landscape; this is nineteenth-century Transcendentalist philosophy, not modern cognitive science, environmental psychology or a clinical claim.

Soliloquies in England, “Dickens”; Santayana uses caricature to describe the gap between living reality and conventional masks.

Hamlet, Act 2, Scene 2; Hamlet says this to Rosencrantz and Guildenstern while explaining that Denmark feels like a prison to him. The line is dramatic dialogue, not a detached psychological proposition by Shakespeare.

As You Like It, Act II, Scene 7, Jaques; 1919 Yale Shakespeare edition edited by Jack R. Crawford, printed page 42 / Wikisource scan leaf 54. “All the world’s a stage, and all the men and women merely players” opens Jaques’s seven-ages speech after Duke Senior compares human suffering with theatrical pageants. The metaphor remains dramatic character speech about roles and aging, not Shakespeare speaking autobiographically.