cor-, cord-, cour-
accord (s) (noun), accords (pl)
accord (verb), accords; accorded; according
Aliud corde premunt, aliud ore promunt.
One thing they conceal in the heart, they disclose another with the mouth.
Another version is, "No use trying to keep a secret." A warning that when more than one person knows something, it is no longer a secret because there is usually someone who will talk about it.
Beati mundi corde.
Blessed are the pure in heart.
Motto of Lancing College, U.K.; from the New Testament: Matthew 5:8.
A cross reference of another word group that is related to: "heart": cardio-.