Your language should be restrained, frank, sincere, candid, unaffected and honest. Be on guard against equivocation, ambiguity or dissimulation. While it is not always advisable to say everything that is true, it is never permissible to speak against the truth. You must become accustomed never to tell a deliberate lie whether to excuse yourself or for some other purposes, remembering always that God is the ‘God of truth.’
–Saint Francis de Sales (1567-1622)