“I have recently been examining all the known superstitions of the world, and do not find in our particular superstition one redeeming feature. They are all alike founded on fables and mythology.”
Quoted in [1906, Six Historic Americans, John E., Remsburg, chapter 2, New York, The Truth Seeker Company, 13504056M, 2219498, 74, http://www.archive.org/details/sixhistoricameri00rems], who claimed it to be from a letter to "Dr. Woods." The full letter is never reproduced, and the Jefferson Foundation lists http://www.monticello.org/site/jefferson/superstition-christianity-quotation the quotation as spurious.
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Thomas Jefferson 456
3rd President of the United States of America 1743–1826Related quotes

1896
September
The Degraded Status of Woman in the Bible
Free Thought Magazine
Chicago
14
540
http://books.google.com/books?id=TfOfAAAAMAAJ&pg=PA540&dq=%22I+have+endeavored+to+dissipate%22

Context: I make this chief distinction between religion and superstition, that the latter is founded on ignorance, the former on knowledge; this, I take it, is the reason why Christians are distinguished from the rest of the world, not by faith, nor by charity, nor by the other fruits of the Holy Spirit, but solely by their opinions, inasmuch as they defend their cause, like everyone else, by miracles, that is by ignorance, which is the source of all malice; thus they turn a faith, which may be true, into superstition.
Letter 21 (73) to Henry Oldenburg , November (1675)

Letter to her sister Elle (1923); later published in Letters from Africa: 1914-1931 (1981) edited by Frans Lasson, translated by Anne Born.

My Reviewers Reviewed (lecture from June 27, 1877, San Francisco, CA)

"To the Indianapolis Clergy." The Iconoclast (Indianapolis, IN) (1883)

"Some Mistakes of Moses" (1879) http://www.archive.org/stream/somemistakesmose00ingeuoft/somemistakesmose00ingeuoft_djvu.txt Section II, "Free Schools".

Source: The Wisdom of W.E.B. Du Bois (2003), p. 132