Explanation: while the world changes around me, even parts of myself are forever changing, the core of me and my beliefs remain the same.
I am increasingly secure and calm in what I think is right. Only a while ago my defense would have been meeting idiocy with anger. I am over that now.
Realizing that I just exercised pretty good self-control just made my mental castle all that much more impregnable.
Clarification: you may come and visit for tea. I'll listen if you are friendly. But if you come in hostility, your words and actions will have no effect.
I will use defensive measures to defend what is not yours to take.