Galileo’s deep depression is most evident from a long letter of 13th October addressed to a cardinal of the Barberini family,[298] which was to reach him through Niccolini. Galileo remarks first that he and his friends had foreseen that his “Dialogues” would find opponents, but he had never imagined that the envious malice of some persons would go so far as to persuade the authorities that they were not worthy to see the light. He goes on to say that the summons before the Inquisition at Rome had caused him the deepest grief, for he feared that such a proceeding, usual only in the case of serious delinquents, would turn the fruits of all his studies and labours during many years, which had lent no little repute to his name with the learned all over the world, into aspersions on his fair fame. “This vexes me so much,” continues Galileo, “that it makes me curse the time devoted to these studies in which I strove and hoped to deviate somewhat from the beaten track generally pursued by learned men. I not only repent having given the world a portion of my writings, but feel inclined to suppress those still in hand, and to give them to the flames, and thus satisfy the longing desire of my enemies to whom my ideas are so inconvenient.” After this desperate cry from his oppressed soul, he expresses his conviction that, burdened with seventy years and many bodily sufferings, increased by constant sleeplessness, he shall not reach the end of this tedious journey—made more arduous by unusual difficulties—alive. Impelled by the instinct of self-preservation common to all men, he ventures to ask the good offices of the cardinal. He begs him to represent his pitiable condition to the wise fathers in Rome, not to release him from giving account of himself, which he is most anxious to do, as he is sure that it will only tend to his advantage, but only that it may be made easier for him to obey. There are two ways of doing this. One is for him to write a minute and conscientious vindication of all that he has said, written, or done since the day when the conflict began on Copernicus’s book and his new system. He is certain that his sincerity and his pure, zealous, and devout attachment to the holy Church and its supreme head, would be so obvious from this statement, that every one, if he were free from passion and party malice, must confess that he had behaved so piously and like a good Catholic, that not even any of the fathers of the Church to whom the epithet _holy_ is applied, could have shown more piety. He asserts and will indisputably prove, by all the works he has written on this subject, that he has only entered into the controversy out of zeal for the holy Church, with the intention of imparting to her servants that knowledge which one or other of them might wish to possess, and which he had acquired by long study, as it treated of subjects difficult to understand and different from the learning generally cultivated. He will