It is hard to believe that a man is telling the truth when you know that you would lie if you were in his place. (H.L. Mencken, 20th century essayist)
What does this say about character? First, it suggests that the hearer has his doubts about the character of the speaker. Then, it raises the same question about the hearer. It’s a shame if we really doubt our own honesty, suggesting we would lie if the circumstances seemed to demand it. It seems highly judgmental to doubt another’s character because of our own weakness.
Do not judge others, and you will not be judged. For you will be treated as you treat others. The standard you use in judging is the standard by which you will be judged. (Matthew 7:1-2)