100 years ago today - Feb 17, 1912

[Temple] Members of the Church who join secret societies after having been made acquainted with the attitude of the Church with respect to secret organizations bar themselves from the temple * [T]hey also render themselves ineligible to hold presiding positions in the priesthood, and should not be used as Teachers of the people, for the simple reason that an unwritten rule of the Church forbids its members from teaching to others that which they themselves do not practice. [Joseph F. Smith, Anthon H. Lund, and Charles W. Penrose to Robert D. Young and counselors, Feb. 17, 1912]

[Source: Anderson, Devery; The Development of LDS Temple Worship, 1846-2000: A Documentary History, http://amzn.to/TempleWorship]