How many times do you need to repeat a lie before it becomes true?

I don't lie; it's one of my faults. People think I'm harsh, but it's just I've no time for liars or bullshit. If you're honest you don't have to keep things straight or remember what you've said. Life is a lot less complicated too.

A lie is a lie even if the entire world believes it.
A truth is the truth even if nobody believes it.