It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so. - Mark Twain

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Engraved portrait of Mark Twain, facing right

It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.

English
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About Mark Twain

Samuel Langhorne Clemens (November 30, 1835 – April 21, 1910), known as Mark Twain, was an American humorist, novelist, writer, and lecturer.

Biography information from Wikiquote · Portrait adapted from Wikimedia Commons (Public domain / CC0)

Also Known As

Pen Names: Sieur Louis de Conte Thomas Jefferson Snodgrass Quintus Curtius Snodgrass J. W. Bothwell
Birth Name: Samuel Langhorne Clemens
Alternative Names: Samuel L. Clemens Samuel Clemens Louis de Conte

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All men have heard of the Mormon Bible, but few except the "elect" have seen it, or, at least, taken the trouble to read it. I brought away a copy from Salt Lake. The book is a curiosity to me, it is such a pretentious affair, and yet so "slow," so sleepy; such an insipid mess of inspiration. It is chloroform in print. If Joseph Smith composed this book, the act was a miracle — keeping awake while he did it was, at any rate. If he, according to tradition, merely translated it from certain ancient and mysteriously-engraved plates of copper, which he declares he found under a stone in an out-of-the-way locality, the work of translating was equally a miracle, for the same reason.

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