thou hast attained to a great power and hast no small portion of Hellas for thy share, being the ruler of Sicily, come to the assistance of those who are endeavouring to free Hellas, and join in making her free; for if all Hellas be gathered together in one, it forms a great body, and we are made a match in fight for those who are coming against us; but if some of us go over to the enemy and others are not willing to help, and the sound portion of Hellas is consequently small, there is at once in this a danger that all Hellas may fall to ruin. For do not thou hope that if the Persian shall overcome us in battle he will not come to thee, but guard thyself against this beforehand; for in coming to our assistance thou art helping thyself; and the matter which is wisely planned has for the most part a good issue afterwards.” 158.