It appears, dearest Zanobi and Luigi, a wonderful thing to those who have considered the matter, that all men, or the larger number of them, who have performed great deeds in the world, and excelled all others in their day, have had their birth and beginning in baseness and obscurity; or have been aggrieved by Fortune in some outrageous way. They have either been exposed to the mercy of wild beasts, or they have had so mean a parentage that in shame they have given themselves out to be sons of Jove or of some other deity. It would be wearisome to relate who these persons may have been because they are well known to everybody, and, as such tales would not be particularly edifying to those who read them, they are omitted. I believe that these lowly beginnings of great men occur because Fortune is desirous of showing to the world that such men owe much to her and little to wisdom, because she begins to show her hand when wisdom can really take no part in their career: thus all success must be attributed to her. Castruccio Castracani of Lucca was one of those men who did great deeds, if he is measured by the times in which he lived and the city in which he was born; but, like many others, he was neither fortunate nor distinguished in his birth, as the course of this history will show.