What is meaning of the sentence 「夫非盡人之子與」? 夫非盡人之子與


I only understand this sentence from classical Chinese to a very low degree. 


夫  could be some kind of sentence particle or simply mean "man".
非 and  與 often belong together, 非  negates a phrase in a sentence with
a  copula. 
盡 , at least per how I know it, means "to fill" or "utmost"


So, I cannot make any semantical sense out of it, but if I tried, I would render it as:


  a man is not the child of an utmost man (god?), or is he?


Please tell me my misunderstandings and explain the real meaning.
夫 is a particle that you can ignore in this sentence.

Here, 非 is a negation, in this case as part of a rhetorical question with 與: Is it not? (or, in this case: Are we not?)

盡 in this text means all.

Now, 人之子 belong together: sons of men.

Finally, 與 is a final particle marking a question, like 吗 in modern Chinese.

The translation of the sentence is: “Are we not all sons of men?”

This is a translation without context, of course. I’d have to read the rest of this Mengzi passage to give you a better one.