Carlo Acutis doesn’t look like your typical saint. In a photo widely circulated on the internet, he is wearing a red polo shirt with a navy blue collar. He stands against a dazzling mountain backdrop, rucksack straps over his shoulders, with a hint of teenage shyness in his narrowed eyes. Carlo was born in London in 1991, which means that if he were alive today he would be just 27. In the months before he died from leukaemia, aged 15, he created a website that documented Eucharistic miracles. The Eucharist, he said, was “my highway to heaven”.