A white lie is allegedly one which is done for someone's good and which harms no one. There’s no such thing. The philosophical view that allows people to think that lies can be harmless is one which counts the self as nothing morally interesting.
The first point to note is that although telling lie is easy to get things in the short period of time, it will create a bad impression on the next generation as well as it does not give any benefit on long way. For example, if you tell some lies to the children such as smoking doesn't effect on everyone around, what will they learn in their future? It is dangerous for us to aware of wrong way because of adult. Another point I would like to mention is that if we always cheat others many times, one day our lie will befall upon us and will lose prestige in our relationships. The story telling about a shepherd rearing his sheep is typical example. He cheats villagers many times that there was wolf on the hill. When they ran to save him but found no wolf, they became angry with him. And then when the wolf really came, no one bothered him. Finally, the wolf attacked his sheep and also killed him. It was due to his own sin that he got the kill.
A 'perfect world' is usually imagined as a world with no lies, but to many people's disappointment, the world can never be perfect. This is because the majority of the people in the world has lied or will lie at one point in their life, even though they can just be white lies. The main reason why people usually lie is for protection. They