On Lying.

Confucius said, "I do not see what use a man can be put to, whose word cannot be trusted. How can a wagon be made to go if it has no yoke-bar, or a carriage if it has no collar-bar?"

14. Confucianism. Analects 2.22From: http://www.unification.net/ws/theme062.htm
We all do it, even though we know we shouldn't. Every major religion condemns lying; you can see for yourself if you click on the link above. If it's so universally frowned upon in practically every culture on Earth, then why...