The Sage remains conscientiously alert not to forget danger when secure or chaos when well ordered. When the realm is free from military affairs, the martial cannot be neglected. If every aspect isn't pondered, one will lack the means to defend against the violent. It is necessary to internally cultivate culture and virtue while externally making strict martial preparations. When embracing and being conciliatory toward distant peoples, guard against the unanticipated. Throughout the four seasons one must practice the martial rites in order to show that the state has not forgotten warfare. One who has not forgotten warfare teaches the people not to neglect their military training. A principle from the Ssu-ma Fa states: "Even though the realm is at peace those who forget warfare will inevitably be overturned."