I’m finding myself draw to this phrase. It’s clearly messing with me; At first brush it might seem to be an oxymoron. However it depends on which definition of “moderation” I choose. If moderation is something I have—say, I am moderate in my opinions—then that moderation simply is. That moderation is neither short nor tall, slow nor fast, and neither restrained nor unrestrained.
But if moderation is thought of as an action—something I am doing continuously, like running or living or talking—then it can clearly be done to different degrees. My running can be slow or fast. (Technically, my running is uniformly slow, but bear with me for this simile.) My living can be conservative or outlandish. And so my moderation can be restrained or unrestrained. Currently, my moderation dial is turned to about, 2; Picture me knocking on the control panel asking, “Hello? Is this on?” I need to twist that moderation up to 11.
Update Oct 2020: See also, Festina Lente.