“It is only as the temporary representatives and servants of the people that we meet here, we bring no hereditary status or gift of infallibility, and none follows us from this place.”

Source: James Nasmyth engineer, 1883, p. 1
Context: Our history begins before we are born. We represent the hereditary influences of our race, and our ancestors virtually live in us. The sentiment of ancestry seems to be inherent in human nature, especially in the more civilised races. At all events, we cannot help having a due regard for the history of our forefathers. Our curiosity is stimulated by their immediate or indirect influence upon ourselves. It may be a generous enthusiasm, or, as some might say, a harmless vanity, to take pride in the honour of their name. The gifts of nature, however, are more valuable than those of fortune; and no line of ancestry, however honourable, can absolve us from the duty of diligent application and perseverance, or from the practice of the virtues of self-control and self-help.

Rich Dad Poor Dad: What the Rich Teach Their Kids About Money-That the Poor and the Middle Class Do Not!

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

Source: World Without End (1995), Chapter 36 (p. 517)

Source: The Way of Kings

Source: True Love: A Practice for Awakening the Heart