If someone tells a lie, the truth has become their enemy and their shame. Do not engage such treacherous and unhappy people. Carry on as if no one of consequence has said anything, because no one of consequence has. The truth defends itself.
There is a mountain of good work that needs your attention more than defending your silly pride. Do not neglect good work so that you may roll in a dung heap like those with no focus or purpose, and do not give to toxic waste the attention that is due to honest endeavors.
People with joy, honor, and integrity are not found in these pits of toxicity, and you will become whatever surrounds you – do not let it be dung!