All kidding aside, if you're out in the wilderness, or the zombie apocalypse, carry at least one knife with you. It's not only for defending yourself. A knife is in many ways your most important survival tool, and it is for a reason.
“Freedom is scarier than constraint. Constraint gives you a reason, it gives you resistance. It gives you tension, it gives you something to fight. Freedom dares you with a question, what are you going to do?” - Tom Hiddleston (Via the-haven-of-fiction.tumblr)