Black and White According to a Mormon Leader

Where did they come up with this stuff?

“There is a reason why one man is born black and with other disadvantages, while another is born white with great advantages. The reason is that we once had an estate before we came here, and were obedient, more or less, to the laws that were given us there. Those who were faithful in all things there received greater blessings here, and those who were not faithful received less” (Joseph Fielding Smith in Mormonism 101: Examining the Religion of the Latter-day Saints eds. Bill McKeever and Eric Johnson (Grand Rapids, MI: Baker Books, 2000), 237).