"Burn up playing cards if you have any."
President Brigham Young

"The Church, as a church, requests its members not to play cards."
President Heber J. Grant

"Let all chance games be banished from our families."
President Joseph F. Smith

"To the extent that worldliness false doctrine, and iniquity are found among the saints, they too partake of the spirit of the great apostasy. Speaking of men in the last days Nephi said: "They have all gone astray save it be a few, who are the humble followers of Christ; nevertheless, they are led, that in many instances they do err because they are taught by the precepts of men." (2 Ne. 28:14.) It follows that if members of the Church believe false doctrines; if they accept false educational theories; if they fall into the practices and abominations of the sectarians; if they use tea, coffee, tobacco or liquor; if they fail to pay an honest tithing; if they find fault with the Lord's anointed; if they play cards; if they do anything contrary to the standards of personal righteousness required by the gospel - then to that extent they are in personal apostasy and need to repent." Bruce R. McConkie, Mormon Doctrine, 2nd ed., p 45, 271