1. Because it just might make the world around you a better place in the long run (maybe help you sleep better at night, depending if you have an active concience).
2. Maths.
3. I don't know.
4. Because if they had the evidence, they would 'know' instead believing.
5. What is love?
6. Awesome.
7. Lying being wrong is not an absolute statement. Depends heavily on the situation. Saying something like 'no sir, we don't have any jews hiding in our attic', during WW2, seems like a pretty okay lie in my book.
Or something like: 'your ass doesn't look fat in those jeans dear', also a widely accepted exception for lying.
UnluckyToonLinkNG
Very interesting thoughts here...
I'll go ask Google for answers.