Always tell the truth

"Always tell the truth - in what is important and in what seems a small matter.
In a world where so many people habitually think little of a lie and indulge in pretences, we, as Christians must be men and women of truth who always flee from the smallest falsehood. This is how people should know us - as men and women who never tell lies even in matters of little importance, as men and women who shut out of their lives anything that smacks of dissimulation, hypocrisy and duplicity, and who know how to put matters right if they make a mistake. Then our lives will be filled with a great apostolic fruitfulness, for people always trust an upright person, one who knows how to speak the truth with charity and understanding towards all and without hurting people. ...
It is not a matter of knowing just how far we can go in saying things that are untrue before we incur a grave fault. It is a matter of hating lying in all its forms. It's a matter of telling the whole truth, and, when out of prudence or charity this can not be done, then we will hold our tongue and not invent little 'white lies' that falsely ease our consciences. We must love the truth in itself and for itself, not only in the things that can benefit ourselves or other people in a personal way. We must abhor lying as something stupid and despicable, for whatever reason it is resorted to. We must hate it because it's an offence against God, who is supreme Truth. --from In Conversation With God, vol.4, p.115-116