Do not Lie
To refrain from telling lies is to show respect for the truth. No good can come from telling lies, be it out of fun or malice. When a Buddhist observes the fourth precept, he refrains from telling lies or half-truths that exaggerate or understate, and instead cultivates the virtue of truthfulness. Once people uphold the respect for truth, there will be fewer quarrels and misunderstandings and fewer cases of false accusations in the courts of justice. Society will then become more peaceful and orderly.