It was, therefore, by the precautions they observed, that the persons of whom I have just now spoken escaped all those perils that attend the contrivance of conspiracies; and any following their example may expect the like good fortune. And that all may learn to do as they did I shall notice the case of Piso, of which mention has before been made. By reason of his rank, his reputation, and the intimate terms on which he lived with Nero, who trusted him without reserve, and would often come to his garden to sup with him, Piso was able to gain the friendship of many persons of spirit and courage, and well fitted in every way to take part in his plot against the emperor, which, under these circumstances, might easily have been carried out. For when Nero came to his garden, Piso could readily have communicated his design to those friends of his, and with suitable words have encouraged them to do what, in fact, they would not have had time to withdraw from, and was certain to succeed. And were we to examine all similar attempts, it would be seen that there are few which might not have been effected in the manner shown. But since most men are very ignorant of practical affairs, they commit the gravest blunders, especially in matters which lie, as this does, a little way out of the beaten track. Wherefore, the contriver of a plot ought never, if he can help it, to communicate his design until the moment when it is to be executed; or if he must communicate it, then to some one man only, with whom he has long been intimate, and whom he knows to be moved by the same feelings as himself. To find one such person is far easier than to find several, and, at the same time, involves less risk; for though this one man play you false, you are not left altogether without resource, as you are when your accomplices are numerous. For I have heard it shrewdly said that to one man you may impart anything, since, unless you have been led to commit yourself by writing, your denial will go as far as his assertion. Shun writing, therefore, as you would a rock, for there is nothing so damning as a letter under your own hand.