Was anyone else confused by A&G’s explanation of the difference between aliquis and quisquam? It goes something like this:
Iustitia numquam nocet cuiquam. Justice never does harm to anybody.
[alicui would mean > to somebody who possesses it> .]
That is more or less the extent to which he explains their differences. (i.e., that is his best explanation of the few.)
Moerus
2
quisquam is used in negative statements and also in senteces with a negative connotation.
In your example cuiquam is used, cause it’s a negative sentence (cf. numquam).
Thank you; however, that information would have been useful about a three days ago! Just joking. (Though, I had already come to that knowledge.) 
In all seriousness: thank you for your help. 