In order for the Defender to defend his beloved, he must be able to harness great power. In order to do this, he must believe himself to be in control, not other people, no matter how strong or how evil they appear to be.
Nothing can ever happen to him or to his beloved without his permission. His life and his death are in his hands alone.
To believe that his fate is in the hands of another would be the greatest folly of all, the greatest illusion. The Defender must not adhere to illusions, but recognize them for what they truly are.