The mortal terror inspired by the arrival of barbarian destroyers is the beginning of wisdom. People become aware of the seriousness of reality, and they acknowledge the value of their way of life, at the time when everything that they hold dear is on verge of being wiped out by an implacable enemy. In times of peace and prosperity, people become unserious; their politicians and intellectuals take the world for granted, they waste their energy in squabbling over petty issues and debating utopian theories. The best works of philosophy in the last 2500 years have been created in places that were in the state of turmoil—due to a civil war, an outside attack, or great intellectual and religious schisms. Therefore, I hold that mortal terror is the wellspring of wisdom in human beings.