Now that the quarterback has recovered from his injury, this week the team will be functioning 'at full strength' again. [=the team will have all its players again]
We are negotiating from a 'position of strength'. [=from a strong position; from a position that gives us an advantage]
He didn't mean to knock you down; he just 'doesn't know his own strength'. [=doesn't realize how strong he really is]
(..) - You don't know the Dark Forest. - Then I'll find somebody who does. I won't abandon her a second time. The forest gains its strength from your weakness. Do you drink to drown your sorrows, or your conscience? What concern is it of yours why I drink? I suppose a mans sorrows are his own. (..)2012 Snow White and the Huntsman
(..) so alive against the white, she thought: "If only I had a child as white as snow, lips as red as blood, hair as black as a raven's wings, and all of the strength of that rose." Soon after a daughter was born to the queen, and was named Snow White. And she was adored throughout the kingdom, (..)2012 Snow White and the Huntsman