"The soul should use times of security to prepare itself for harsh circumstances. It should fortify itself, when enjoying the blessings of Fortune, against the blows of Fortune. A soldier practices maneuvers during peacetime and constructs defensive ramparts, although no enemy is near, and wearies himself with nonessential exertion so that he can be ready for necessary exertion. If you don’t want someone to panic in a crisis, you must train him before the crisis."
— Seneca the Younger