be (not) (one's) brother's keeper

(redirected from be his brother's keeper)

be (not) (one's) brother's keeper

To be responsible for another person's actions. This phrase is often used in the negative and can refer to anyone (not just one's literal brother). Of course I'm disappointed that Travis got arrested again, but I'm not my brother's keeper. When I'm babysitting him, I'm my brother's keeper.
See also: keeper

be one's brother's keeper

to be responsible for someone else. (Used of others besides just real brothers.) I can't force these kids to go to school and get an education so they can get jobs. I am not my brother's keeper. You can't expect me to be my brother's keeper. Each of us should be responsible for himself! be one's own man and be one's own master to be someone who is not controlled by other people; to be an independent person. Bert longed to be his own master, but at the same time feared losing the security he had as the employee of a large company. When I go away to college, I'll be my own man. My parents won't be able to tell me what to do anymore.
See also: keeper