“Many Americans share the feeling that our society has forgotten how to mind its own business.”

The Liberty Manifesto (1993)

Commonly quoted on the internet, and also in recent books such as Planetary Survival Manual by Matthew Stein (2000), p. 51.
Stein's book is the earliest published source located with that precise version of the quote, but the quote can be found in earlier Usenet posts such as this one from 1995 http://groups.google.com/group/rec.arts.ascii/msg/d9f6ec3887950a0d?hl=en, and other published variants of the quote using the words "sacred gift" can be found earlier. A Google Books search http://books.google.com/advanced_book_search?q=%22sacred+gift%22+einstein with the date range restricted to 1900-1990 shows only a handful in the 1980s and 1970s, and several of them attribute it to The Metaphoric Mind by Bob Samples (1976), which also seems to be the earliest published variant. Samples does not provide an exact quote, but writes on p. 26: "Albert Einstein called the intuitive or metaphoric mind a sacred gift. He added that the rational mind was a faithful servant. It is paradoxical that in the context of modern life we have begun to worship the servant and defile the divine." It seems as if the last sentence about worshipping the servant is just Samples' own comment (though in later variants it became part of the supposed quote), while the earlier sentences only paraphrase something that Samples claims Einstein to have said. Einstein had many quotes about the value of intuition and imagination, but the specific word "gift" can be found in a comment remembered by János Plesch in the section Attributed in posthumous publications, "When I examine myself and my methods of thought I come to the conclusion that the gift of fantasy has meant more to me than my talent for absorbing positive knowledge." So, Bob Samples might have been paraphrasing that comment. Likewise Einstein had a number of quotes about the intellect being secondary to intuition, but the language of the intellect "serving" can be found in a quote from the Out of My Later Years (1950) section, "And certainly we should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality. It cannot lead, it can only serve; and it is not fastidious in its choice of a leader."
Misattributed

The Essays Or Counsels, Civil And Moral, Of Francis Ld. Verulam Viscount St. Albans (1857), Of Empire

[Clinton walks back 'deplorables' comment: I 'regret' using the term to describe 'half' of Trump's supporters, Beremy, Berke, Business Insider, 10 September 2016, http://www.businessinsider.com/clinton-regrets-deplorables-comment-2016-9/]
2010s, 2016, September

Interim report of the Independent Expert on the promotion of a democratic and equitable international order, Alfred Maurice de Zayas http://www.ohchr.org/Documents/Issues/IntOrder/A.67.277_en.pdf.
2012

Quitting the paint factory: On the virtues of idleness

Where Do We Go from Here : Chaos or Community? (1967), p. 109
1960s
Context: Many of the ugly pages of American history have been obscured and forgotten. A society is always eager to cover misdeeds with a cloak of forgetfulness, but no society can fully repress an ugly past when the ravages persist into the present. America owes a debt of justice which it has only begun to pay. If it loses the will to finish or slackens in its determination, history will recall its crimes and the country that would be great will lack the most indispensable element of greatness — justice.

Reported in an editorial in the Alton Evening Telegraph (July 14,1964), A-4; appeared in a display ad in the Los Angeles Times (September 27, 1964), D14. Reported as misattributed in Paul F. Boller, Jr., and John George, They Never Said It: A Book of Fake Quotes, Misquotes, & Misleading Attributions (1989), p. 24, stating that an aide of Eisenhower's had denied that Eisenhower had made the remark.
Misattributed