“Let all your efforts be directed to something, let it keep that end in view. It’s not activity that disturbs people, but false conceptions of things that drive them mad.” —SENECA, ON TRANQUILITY OF MIND, 12.5
Holiday, Ryan; Hanselman, Stephen. The Daily Stoic: 366 Meditations on Wisdom, Perseverance, and the Art of Living (p. 13). Penguin Publishing Group. Kindle Edition.