"Has it ever happened to you, O king, that rival kings rose up against you as enemies and opponents?
-Then you set to work, I suppose, to have moats dug, and ramparts thrown up, and watch towers erected, and strongholds built, and stores of food collected?
-Not at all. All that had been prepared beforehand.
-Or you had yourself trained in the management of war elephants, and in horsemanship, and in the use of the war chariot, and in archery and fencing?
-Not at all. I had learnt all that before.
-With the object of warding off future danger." – Milinda Panha (The Questions of King Menander), Book III, Chapter 7