"He is prickly not to harm, but to protect oneself."
italicMeaning:
"Do not be afraid to look firm, fierce or brave. It's not to be feared, but to keep yourself safe. Got a firmness that's important, a bit fierce is okay. Similarly, if we have something to protect ourselves. Everyone has his own way of protecting himself, protecting his heart and protecting his pride. All of that so as not to be disturbed by others. " 