Do you think that ethical questions can be answered by science?

Interesting question. Assuming bad values are negative and good are positive in value, just how would assignment of social values be arrived? And what weight should any value be given?

See the problem? See also Isaac Asimov and the positronic brain. Sure it's sci-fi, yet there was some interesting questions proposed in those series of books.

Note Isaac Asimov was both a scientist and
mathematician himself.

http://www.asimovonline.com/oldsite/Essays/mathematics.html