"Falsehood they speak one to another,
with lying lips, with a false heart."

and in the section of the Rule for today, its antidote, being truth-full:

"Speak the truth, heart and tongue."

Benedict reverses the expected order of things: a pure heart will utter pure speech; whereas a lie masks the darkness in the heart of the deceiver. Reveal or conceal? It is worth pondering how we use words today.