“What she had long believed was not true, and now the world was wide open to discover what was.
It is like all my life I thought the sky was green.”

Source: Water Street (2006), Chapters 11-20, p. 64

Source: Clockwork Prince

Source: Hit and Run

1840s, Essays: First Series (1841), Self-Reliance
Context: I read the other day some verses written by an eminent painter which were original and not conventional. The soul always hears an admonition in such lines, let the subject be what it may. The sentiment they instil is of more value than any thought they may contain. To believe your own thought, to believe that what is true for you in your private heart is true for all men, — that is genius. Speak your latent conviction, and it shall be the universal sense; for the inmost in due time becomes the outmost, — and our first thought is rendered back to us by the trumpets of the Last Judgment.

Source: In the Garden of Iden (1997), Chapter 5 (p. 46)

Mary in Ch. 34 : There is Now
His Dark Materials, The Amber Spyglass (2000)

Introduction to The Lost Princess of Oz (1917)
Letters and essays
Context: Some of my youthful readers are developing wonderful imaginations. This pleases me. Imagination has brought mankind through the Dark Ages to its present state of civilization. Imagination led Columbus to discover America. Imagination led Franklin to discover electricity. Imagination has given us the steam engine, the telephone, the talking-machine, and the automobile, for these things had to be dreamed of before they became realities. So I believe that dreams — day dreams, you know, with your eyes wide open and your brain machinery whizzing — are likely to lead to the betterment of the world. The imaginative child will become the imaginative man or woman most apt to create, to invent, and therefore to foster civilization. A prominent educator tells me that fairy tales are of untold value in developing imagination in the young. I believe it.

Source: Dune