We live in a post-rationalist age, when we define "truth" and "knowledge" in absolute terms. I love Nephi's definition of "true" - essentially, "it is according to my experiences and understanding, and I am not lying about it". In other words, if someone is expressing something they believe sincerely due to their own experiences, it is "true" for them.
I really like that, since it allows everyone to discover "truth" in the context of their own lives. I understand the issues involved with this view, but I think the benefits outweigh the danger - and "the truth shall make you free" resonates more fully in that context for me than in any other.
Don't get me wrong. I do believe in Absolute Truth, and I strive to understand it whenever possible. I just am not confident I see through my glass clearly enough to tell others they must reject what works for them and accept what works for me - especially when Mormonism teaches that we will be judged largely on what we do and become and how valiantly we follow the dictates of our own consciences.