"If truth is beauty, how come no one has their hair done in the library?"

This quote by Lily Tomlin is a humorous way of pointing out the detach in between the method we perceive appeal and the way we perceive fact. The quote indicates that reality is lovely, yet nobody is making the effort to make themselves look beautiful in the library. This might be analyzed as a commentary on how we focus on appeal over truth in our society. We often concentrate on our physical appearance and disregard to look for knowledge and reality. Tomlin's quote is a suggestion that we should be striving for fact and understanding, not just physical charm. It is a funny way of motivating us to focus on fact and knowledge over physical appeal.