Blissful Ignorance.......do you really want to know

I learned two statements as a child , one from a song and the second from a cartoon series. Ignorance is kind , knowledge is power. Anybody care to guess which was from where. What I realized from the sayings is that however much knowing a lot can be a good thing, knowing very little could also be in your favor. Case in point, believing in a being that you cannot prove exists is a kind form of ignorance. Children believing in Santa Claus gives them something to be excited about but the knowledge of his absence eventually frees them from dependance on the unrealistic at the expense of their innocence.
So what brought this on, well when you sit across the table from someone you are having a discussion with and everything he says is a lie this can work either way for you. Not knowing the truth could keep from harm or take you straight into it. One could argue that you shouldn't trust everything that comes out of the mouth of someone who's sole purpose is to profit. Brings us to another term set of words to live by,trust but always confirm.
In business , lies come with the territory but what about from someone you trust. You know that moment you spoke to a loved one and they told you a lie? Well depending on how big the lie is, it hurts when you find out. How about if the loved one lied to protect you from the truth, they may know that it could wreak havoc in your lives and you may never speak again. Think about that, I am not advocating for lying to your relatives or close people but you have the power to destroy someone with your tongue.
Please use it wisely......