This Maxim is different from the one that says “Control Yourself” in that it is talking about a specific emotion that many of us have difficulties with in our day-to-day lives. Anger, when not controlled, can be one of the most destructive forces in our lives. When controlled and harnessed it can be one of the most constructive forces in our lives, such as when it is the impetus for some of the most important social movements of our times. One need only look at what has been happening with popular uprisings around the globe of people who are angry with the political structures of our times to see that this is so.
Controlled anger demonstrates that we are masters of our actions. The emotion is still there, but we can then choose what the most appropriate course of action is. This is not to say that we do nothing, but rather that we are looking to find the right thing to do in the circumstance. That may be to disassociate with a person who is causing problems rather than to continue the association and chance that the anger will build to a level where it cannot be controlled.
The Gods themselves give us guidance on the appropriate uses of anger. Anger is the fuel for many of the struggles in our lives and Ares, Lord of Battles, shows us how to channel that anger into constructive results when he works in tandem with other Gods to inspire us to create change. This inspiration is at the heart of this Maxim and it is also the fruit of the control.