[Heber J. Grant]
... The rites and ceremonies performed in the temples are sacred, not secret, and are not open to the public[,] no more than are those which are performed in the Masonic temples. There is no place in the temple that a faithful, worthy Latter-day Saint cannot go, nor is any ordinance administered therein that a worthy Latter-day Saint cannot receive.
[Heber J. Grant to Dorothy C. Alexander, Jan. 18, 1935 as quoted in Anderson, Devery; The Development of LDS Temple Worship, 1846-2000: A Documentary History, http://amzn.to/TempleWorship]