Europe today is the most secular region in the world. Europe is the only region in the world experiencing population decline. Wherever you turn today the more religious the community, the larger on average are their families.

When you've got Jews and Christians, Muslims, Sikhs and Hindus removing graffiti from buildings, or getting drug dealers off the street, that's side by side. When you do that, you take it from the very elevated level of interfaith dialogue to the street level of neighbors. You get them working side by side, and they become friends. Friendship sometimes counts for more than interfaith agreement or understanding. Friendship is deeply human.

If we are to cherish freedom, and to guard it, we must remember what the alternative is: the bread of affliction and the bitter herbs of slavery.

Faced with destruction, the Jewish people survived.

Whole communities are growing up without fathers or male role models. Bringing up a family in the best of circumstances is not easy. To try to do it by placing the entire burden on women - 91% of single-parent families in Britain are headed by the mother, according to census data - is practically absurd and morally indefensible.

Sometimes the sight of someone in one faith wrestling with that faith can empower you to wrestle with another faith. For me, it was reading about how the Catholic Church wrestled with itself in the 1960s. Pope John XXIII set Nostra Aetate - the Declaration on the Relation of the Church with Non-Christian Religions - in motion. It changed the relationship between Jews and Catholics. Today, Jews and Catholics meet as friends. If you can do that, after the longest history of hatred the world has known, that empowers you as a Jew or a Muslim to wrestle with your faith.

Hope, even more than necessity, is the mother of invention.