"i know gravity is true"

from eric davis' facebook status:

No one ever stands in front of a group and says "I know gravity is true." Why is that? It's because evidence makes gravity an accepted reality. Be wary of any idea in which people feel the need to repeatedly declare how "true" it is. Chances are that such ideas have no factual support, and those people are either (A) deluded, or (B) still trying to convince themselves despite lack of factual support.

this reminds me of the boyd packer quote about self-brainwashing:

"A testimony is found in the bearing of it."

and its implication: "If you don't believe something that we teach, or if you have doubts, BEAR FALSE WITNESS about it, and KEEP LYING until you've convinced yourself that your testimony is true."