You all know about Pythagoras, the triangle guy? His brilliant theorem to calculate the lengths of the sides of a right-angled triangle is elegant, and unlike almost every other idea the ancient Greeks came up with (with apologies to Euclid) it turned out that he got it right first time. We still use his equation
Roman emperors are perhaps remembered for their notoriety more than anything else. We remember Julius Caesar, after whom all the subsequent rulers took their name, as a brilliant commander (and because he wrote an awful lot of histories about himself) but he is most famous for his actions against the dying Roman Republic, for which