| Quote #4
As François's whip backed him up, Buck found it to be cheaper to mend his ways than to retaliate. (2.17)
The threat of violence continually hangs over Buck, causing him to submit rather than fight.
| Quote #5
All his days, no matter what the odds, he had never run from a fight. But the club of the man in the red sweater had beaten into him a more fundamental and primitive code. (2.23)
Buck quickly learns that submission is sometimes a necessary component of the law of club and fang.
| Quote #6
[…] and in the bitter hatred between him and Spitz he betrayed no impatience, shunned all offensive acts. (3.1)
Before he fights with Spitz, Buck tries to avoid a conflict.