“What Stoics discover, though, is that willpower is like muscle power: The more they exercise their muscles, the stronger they get, and the more they exercise their will, the stronger it gets. Indeed, by practicing Stoic self-denial techniques over a long period, Stoics can transform themselves into individuals remarkable for their courage and self-control.”

“What Stoics discover, though, is that willpower is like muscle power: The more they exercise their muscles, the stronger they get, and the more they exercise their will, the stronger it gets. Indeed, by practicing Stoic self-denial techniques over a long period, Stoics can transform themselves into individuals remarkable for their courage and self-control.”

— William B. Irvine