Sanctify yourself and you will sanctify society.

Each generation of the church in each setting has the responsibility of communicating the gospel in understandable terms, considering the language and thought-forms of that setting.

The real difference between Francis and Dominic, which is no discredit to either of them, is that Dominic did happen to be confronted with a huge campaign for the conversion of heretics, while Francis had only the more subtle task of the conversion of human beings.