" In like manner you should rebuke these two kinds of men,—both those who always lack repose, and those who are always in repose. For love of bustle is not industry,—it is only the restlessness of a hunted mind. And true repose does not consist in condemning all motion as merely vexation; that kind of repose is slackness and inertia. Therefore, you should note the following saying, taken from my reading in Pomponius: “Some men shrink into dark corners, to such a degree that they see darkly by day.” No, men should combine these tendencies, and he who reposes should act and he who acts should take repose. Discuss the problem with Nature; she will tell you that she has created both day and night. "

― Seneca , Letters from a Stoic