The thing about Paul is that he is legitimately kind of unhinged in his willingness to throw himself into physical danger and risk getting hurt or killed in a fight that matters to him.

The way he goes NYOOM the second he realizes that Duncan is about to fight a fuckton of Sardaukar. No shield no weapons no plan no hesitation, ready to take on the most fearsome soldiers in the known universe in his pajamas. And he would have if Duncan hadn't locked the door.

Fly through a sandstorm because it's the only escape route? Never done it before but sure. Crawl under a moving harvester the size of a building with chompy bits on the end? Worst plan ever, let's go. Bait the ornithopter gunship into shooting at him so his crush can blow it up? It was his goddamn idea. Hide quietly when the Harkonnen soldiers show up during the eclipse? Oh hell no, he is looking for a way to escalate that situation immediately. He just killed someone for the first time like yesterday and did not enjoy it. But as soon as the Harkonnens are there he is ready to throw down.

The absolute trapped raccoon energy of him just grabbing the knife blade when Feyd's trying to stab him the second time, because it's probably over but he's not gonna make it easy, and maybe that gives him the extra second he needs to pull his own knife out. That teeth-gritted look he gives Feyd when he is on his knees, beat to shit, two stab wounds, blood all over his face, and is still like bitch you THOUGHT you could out-crazy me.

Like many things about him, it's a double-edged blade. Because it's what wins him respect among the Fremen, that he's willing to go to the front lines and not afraid to take risks. It's the most potent expression of his fierce protective streak, that he'll jump into danger to defend those he loves. And it's also fucking terrifying. It just adds such a chaotic energy to all the other ways that he is scary, that he doesn't just command armies of fanatics and have the power to make the Emperor of the Known Universe bow at his feet, but that this blood-streaked feral little gremlin might show up personally at any moment and stab you in the neck.