Actually it's quite up to date...the late 20th and earlier 21st centuries have only deepened, not lessened, our understanding of the DIFFERENCES between men and women...FMRI, etc. etc. 

Lots of huge differences.

In the 19th century there was little understanding about the complementarity between men and women beyond mere "organ geometry".

Now we know that woman's immunological system undergoes a change during coitus if she's ovulating, suppressing antibodies from attacking sperm/semen.  

What marvelous learnings of our differences and beautiful complementarity. 

And of course in the 19th century we didn't really understand about genetics and so forth. 

So as I said except in the sense of God's love for us...all the rest we have a great individual and gender differences.