Such statements = empty shaking of the air with empty sound. And here's why. Lying = our evolutionary acquisition, one of the ways of adaptation to the external environment. We inherited this method from our parents: not only father and mother, but also other ancestors down to the first living cells. Blaming a person for lying is the same as blaming redheads for the color of their hair. Therefore, ethics that condemns any lie is inherently flawed and does not work. Our human nature does not accept such ethics. What is the way out? The way out is very simple. Follow your nature: a) create conditions in which it is disadvantageous for the counterparty to lie, b) do not contact the lying counterparty, c) lie to the counterparty in order to get away from his blow, d) in case of aggression, eliminate such a character. Calmly. Coolly. Without snot.