That's some serious wisdom. Alas, a close cousin to deliberate lies is the popular claim that truth is subjective. The fact that "truth is subjective" is stated as an absolute which, therefore, contradicts itself, doesn't seem to bother those with whom the claim is popular.
So we have lies on the other side, while our side tends to say there is no truth. This empowers the liars, and, well, here we are.