But Fortune growing envious of the glory of Castruccio took away his life just at the time when she should have preserved it, and thus ruined all those plans which for so long a time he had worked to carry into effect, and in the successful prosecution of which nothing but death could have stopped him. Castruccio was in the thick of the battle the whole of the day; and when the end of it came, although fatigued and overheated, he stood at the gate of Fucecchio to welcome his men on their return from victory and personally thank them. He was also on the watch for any attempt of the enemy to retrieve the fortunes of the day; he being of the opinion that it was the duty of a good general to be the first man in the saddle and the last out of it. Here Castruccio stood exposed to a wind which often rises at midday on the banks of the Arno, and which is often very unhealthy; from this he took a chill, of which he thought nothing, as he was accustomed to such troubles; but it was the cause of his death. On the following night he was attacked with high fever, which increased so rapidly that the doctors saw it must prove fatal. Castruccio, therefore, called Pagolo Guinigi to him, and addressed him as follows: