| Quote #1
Richard is speaking of Elizabeth and Jane Shore's power over King Edward IV. This is a hint that Richard views Edward as utterly weak and credulous. If he lets himself be controlled even by women, Richard definitely has a chance at persuading and controlling him.
| Quote #2
This is a fascinating way to describe how Richard views power. It's less about self-advancement and superiority than just being able to scamper around doing wicked things. Again, it seems Richard delights in his naughtiness.
| Quote #3
Though Anne has every right to seek justice for Richard's evils, she calls out to a higher power to avenge her. She doesn't act herself, perhaps because she feels powerless in relation to Richard.