| Quote #1
Well, sir, the two ran into one another naturally enough at the corner; and then came the horrible part of the thing; for the man trampled calmly over the child's body and left her screaming on the ground. (1.8)
Mr. Hyde commits violence against innocent children without batting an eyelid.
| Quote #2
The other snarled aloud into a savage laugh; and the next moment, with extraordinary quickness, he had unlocked the door and disappeared into the house. (2.36)
Mr. Hyde’s default personality is one of violent savagery.
| Quote #3
"I have been wanting to speak to you, Jekyll," began the latter. "You know that will of yours?"
Dr. Jekyll does not handle unpleasant conversations by resorting to violence, as some people do (e.g. Hyde).