Immanuel Kant

Königsberg is no more. Now known as Kaliningrad, it forms part of a small Russian exclave surrounded by Lithuania and Poland. It is probably here that the third world war will start. Before it was bombed flat and ethnically cleansed, the historic Baltic city formed one of the main centres of the German province of Prussia. Old Königsberg was a port and a -meatballs-and-potatoes kind of place, but also one of the battlefields of the Enlightenment. The philosopher Immanuel Kant was born, lived and died there. One of the questions he struggled with was how to reconcile the claims of human reason with the need for faith in the divine.

Two things that amaze me about the European Enlightenment are the brilliance of its achievements and the stupidity with which it excluded much of humanity from its circle. Say, for example, you were an 18th-century Frenchwoman who wished to advance human understanding of the universe by doing experiments, discussing texts and comparing hypotheses with other experts. You could forget about joining any of the scientific or philosophical academies created for that purpose – they would not let you in. Instead, your best hope was to create a salon and make it fashionable. For this you had to be wealthy, so you could provide the snacks and wine, and you’d need