1. THOSE who undertake to write histories, do not, I perceive, take that trouble on one and the same account, but for many reasons, and those such as are very different one from another. For some of them apply themselves to this part of learning to show their skill in composition, and that they may therein acquire a reputation for speaking finely: others of them there are, who write histories in order to gratify those that happen to be concerned in them, and on that account have spared no pains, but rather gone beyond their own abilities in the performance: but others there are, who, of necessity and by force, are driven to write history, because they are concerned in the facts, and so cannot excuse themselves from committing them to writing, for the advantage of posterity; nay, there are