Philippic 3

But now you must surely see that most disasters are due to traitors, and none are the result of a regular pitched battle. On the other hand you hear of Philip marching unchecked, not because he leads a phalanx of heavy infantry, but because he is accompanied by skirmishers, cavalry, archers, mercenaries, and similar troops.

When, relying on this force, he attacks some people that is at variance with itself, and when through distrust no one goes forth to fight for his country, then he brings up his artillery and lays siege. I need hardly tell you that he makes no difference between summer and winter and has no season set apart for inaction.

Since, however, you all know this, you must take it into account and not let the war pass into your own country; you must not invite catastrophe through keeping your eyes fixed on the simple strategy of your old war with the Lacedaemonians, but arrange your political affairs and your military preparations so that your line of defence may be as far away from Athens as possible, give him no chance of stirring from his base, and never come to close grips with him.

For so far as a campaign is concerned, provided, men of Athens, we are willing to do what is necessary, we have many natural advantages, such as the nature of his territory, much of which may be harried and devastated, and countless others; but for a pitched battle he is in better training than we are.