I can understand it also as staying behind your words. Sure, words are coming out of us and you made them, so that's why it makes you a master of them. But standing behind them is totally different story and only a true master can achieve that. I was blown away by an article about how words can improve plants and water particularly. Cursed words and negative ones can drastically affect plants and even stress them out. So maybe we don't even realize how important are words. And nowadays we have these machines which are shooing billions of words out and can affect other people without realizing it. If you ask me anonymity should be banned on the internet. Stand behind your words and take responsibility for them.