‘If it is not right, do not do it, if it is not true, do not say it.”

This quote implies that you should never do something that you know is wrong. Also that you should never lie in something you say or hear about. For example you should never do something that is not right like sneaking out or cheating on a test. Not only it will be wrong but it will also make you feel wrong to. You should also never lie for example making gossip or twisting words up. You should never do something like that.