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.

Who made this comment about the BoM?

Do you agree with it? Or Not.

And do you know any other famous quotes from famous people?

It's Mark Twain in "Roughing It." ExMormons don't like to quote the rest of the Chapter on the BoM, though, or put the quote in the sardonic context of the "Roughing It." The Chapter has the same QED as the Book of Mormon musical, which is complimentary. Few, if any of you, have actually read "Roughing It."

They weren't made of anything.

they were made of Joe's imagination.

They were not made of Joe Jr's imagination. They were made of 98 fine gold hammered paper thin and covered with gliphs from a language that never existed. Therefore the entire book should be accepted as 100% genuine and never questioned under any conditions because Moroni has the plates and will slap you up the side of the head with them if you dare question them.