The truth or to feel good?

During the course of our life, we have decided about to tell the truth or conceal this information since we were a child’s.

What is the truth? It's the act of telling the true, but what do I prefer?  

Is very complicated said always the truth, because the nature of the human is conceal this for shame or fear of the other person.

In my point of view, in many opportunities I don’t tell the truth because I thought that I can hurt the fillings of someone very important for me, but when I grow up I understand that It’s so important reveal the truth because I would not like that the persons who surround me don’t tell me the truth. In the area of health always we must be honest with the patient about your clinical information.

For example, in a situation in which my friend to tell one of my secret with other person, I prefer that my best friend tell me the truth in the face before that I find out about someone else.

There is a proverb that said: A liar is caught before a thief, because in my opinion the truth always comes up like the light in the darkness.