This question has often been a philosophic topic. Should I or should not I tell mybest friend the truth about her boyfriend ? Should I tell my parents I went out last night without their permission ? There are no correct or wronganswers to that question.
It is often said that people tell the truth because it is in their personality, it is how they are. They do not appreciate lyingbecause they cannot live without saying what they think. That is why people very often feel guilty when they get involved in a lie and prefer revealingthe truth whatever consequences come up.
By contrast, some people keep everything for themselves because they do not want to hurt or to be in conflictwith the others.
One instance in which we can guess that a lie could be useful and understandable is a medical situation when some families make upsomething so that their child can feel better. Despite the burden that the families bear in keeping such an awful secret, who can doubt that they are wiser tokeep that ugly truth to themselves ?
In my opinion, I think you always have to balance the pros and the cons before saying the truth to someone. Youhave to make sure that it is useful and crucial to reveal it, even though saying the truth is a part of good education. As a matter of fact, it isnecessary to tell the truth only when it has a positive consequence sooner or later, when you think that you have to and that you cannot keep it for you.