"If its not right, do not do it, if its not true, do not say it."

This is telling us that if its not something right/good your about to do then don't do it at all. If something is not true then don't say it. Lying isn't good your are not choosing the right if you are making stuff up. Choosing the right is simple. There are many consequences if you choose the wrong. But if you choose the right you will be rewarded. Don't do something that isn't right and don't make stuff up if you know its not true.