It is just 300 years since Joseph Boscovich Bettera was born in what is now Croatia, and his native land is naming 2011 “National Boscovich Year”, and featuring its Jesuit polymath on a stamp. Wikipedia calls him a theologian, physicist, astronomer, mathematician, philosopher, diplomat, poet, Jesuit. AMDG Express would add architect – he suggested a way of strengthening the cracked cupola of St Peter’s Basilica: it worked. Joseph had entered the Jesuits in Rome, and went on to invent the achromatic telescope. His mathematical and astronomical publications brought him all over Europe. He was a member of the Royal Society in London, and of the Russian Academy of Sciences, and, after the suppression of the Jesuits, was invited to Paris by the king, who created a position for him as director of optics for the French navy.