“Never, never and never again shall it be that this beautiful land will again experience the oppression of one by another and suffer the indignity of being the skunk of the world.”

Amos glanced around the ruins and shrugged. “That’s got a lot to do with context, I guess.”
Source: Nemesis Games (2015), Chapter 26 (p. 280)

Source: Alice's Adventures in Wonderland

Netanyahu speech at the UN General Assembly 1 October 2013 http://www.timesofisrael.com/full-text-netanyahus-2013-speech-to-the-un-general-assembly/.
2010s, 2013

Variant: Any moment might be our last. Everything is more beautiful because we're doomed. You will never be lovelier than you are now. We will never be here again.
Source: The Iliad

Tumblr postings
Context: Then of course I recall the incident which I think had some form of deep, psychological impact on me. The time where I was compelled to read out the most insincere, hypocritical ‘apology’ out loud to my fellow peers, that was written by teachers, for a video that should be more abhorred for its stupidity than for its supposed racism, that was absolutely non-existent. I witnessed firsthand, things that were completely beyond my level of comprehension at that time, that was completely beyond my preconceptions of how a school worked, where rules of an official institution was dictated by the unreliable stupidity of the public, and where punishment was dictated not by logic, or by an understanding of a scenario, but because, a book says so. That ‘apology’ given two years ago, and the subsequent deletion of my first Youtube account was not a sign that I knew my ‘mistakes’ and wanted to ‘change for the better’, it was a sign that other people effectively made me say so. Never have I felt so much anger, unjust, and indignation for how things are, how people are and how it affected me and probably many others too. Before that I was passive, soft-spoken and enjoyed the supposed goodness of the world. Never again would I be the same.

Let America Be America Again (1935)

Interview with William Warren Bartley, cited in — [Bartley, William Warren, w:William Warren Bartley, Werner Erhard: the Transformation of a Man: the Founding of est, Clarkson N. Potter, Inc., 1978, New York, 252, 0-517-53502-5]

1960s, Why I Am Opposed to the War in Vietnam (1967)
Context: As I have walked among the desperate, rejected, and angry young men, I have told them that Molotov cocktails and rifles would not solve their problems. I have tried to offer them my deepest compassion while maintaining my conviction that social change comes most meaningfully through non-violent action; for they ask and write me, "So what about Vietnam?" They ask if our nation wasn't using massive doses of violence to solve its problems to bring about the changes it wanted. Their questions hit home, and I knew that I could never again raise my voice against the violence of the oppressed in the ghettos without first having spoken clearly to the greatest purveyor of violence in the world today: my own government. For the sake of those boys, for the sake of this government, for the sake of the hundreds of thousands trembling under our violence I cannot be silent.

Source: Fly by Night