What's sauce for the goose is sauce for the gander.
means. used to say that one person or situation should be treated the same way that another person or situation is treated
ND23-4-2023
"Pull himself together" means to regain emotional control after a stressful or difficult situation.
In this context, it refers to recovering from the grief of his mother's death.
The phrase "killed two birds with one stone".
It is an idiom meaning to achieve two goals or solve two problems with a single action or solution.
It's commonly used to express efficiency.
The idiom "To rob Peter to pay Paul" means to take resources from one area to cover another, often without resolving the underlying issue.
It originated from historical references to reallocating church taxes in England.