“The world is his who can see through its pretension. What deafness, what stone-blind custom, what overgrown error you behold, is there only by sufferance,--by your sufferance. See it to be a lie, and you have already dealt it its mortal blow.”
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Ralph Waldo Emerson 727
American philosopher, essayist, and poet 1803–1882Related quotes
Source: Quartered Safe Out Here (1992), p. xxiv.

“You suffer the blow, but you capitalize on the opportunity left in its wake.”
Source: Always Looking Up: The Adventures of an Incurable Optimist

Rally to Restore Sanity and/or Fear closing speech (2010)

The Jackdaw (translation from Vincent Bourne).
Bartlett's Familiar Quotations, 10th ed. (1919)

“But he who knows what insanity is, is sane; whereas insanity can no more be sensible of its own existence, than blindness can see itself.”
Sanus est, qui scit quid sit insania, quippe insania scire se non potest, non magis quam caecitas se videre.