"...we sometimes don’t believe truth or reject it—because it would require us to change or admit that we were wrong. Often, truth is rejected because it doesn’t appear to be consistent with previous experiences.

When the opinions or “truths” of others contradict our own, instead of considering the possibility that there could be information that might be helpful and augment or complement what we know, we often jump to conclusions or make assumptions that the other person is misinformed, mentally challenged, or even intentionally trying to deceive.

Unfortunately, this tendency can spread to all areas of our lives—from sports to family relationships and from religion to politics."

Elder Uchtdorf - CES Fireside, January 2013.
http://www.lds.org/broadcasts/article/ces-devotionals/2013/01/what-is-truth?lang=eng