D'Artagnan expresses that both he and his friend Porthos, known as Monsieur de Vallon, have a shared affinity for extraordinary adventures. They are drawn to challenges that might seem insane or impossible to others, reflecting their bold, adventurous spirits. This love for daring exploits is a defining characteristic of their personalities.

The statement underlines the theme of camaraderie and the pursuit of glory in Alexandre Dumas' "Twenty Years After". It highlights how both characters thrive on the thrill of taking risks, suggesting that true valor lies in facing the seemingly insurmountable, thus deepening their bond and their commitment to a life full of adventure.