What the ripper means by saying one day men will look back and say that you gave birth to twentith century from movie hell?

In the film "Hell", the Ripper tells Catherine Crowe that "one day men will look back and say that you gave birth to twentith century". What he means by this is that Catherine's actions and ideas regarding social norms and human behavior will have a profound and lasting impact on society. This notion that Catherine's influence would essentially kickstart the beginning of the twentieth century is a testament to the transformative nature of her ideas.