5cfaf4f7_e__and_the_temple___FairMormon__The_Big_Love_Mormon_
[The Latter-day Saint] This is another allusion to the critics' assertion that the Church disciplines scholars and attempts to hide the truth. The phrase from Elder Packer was taken from a talk called "The Mantle is Far, Far Greater than the Intellect." The phrase "some thing that are true are not very useful" is a favorite of critics of the Church. It is used by them to support the idea that the Church excommunicates intellectuals and historians. See: Boyd K. Packer on the truth [The Big Love"Mormon"] 
The Stake President then actually mentions President Packer by name: "...as our Elder Packer has said before, we all know that there's the temptation to tell everything, whether its worthy, or faith promoting or not. Some things that are true are not very useful."
Mormonism and popular media/"Big Love" and the temple - FairMormon
The Big Love"Mormon"