“It's harder to heal than it is to kill.”
“Supernatural healing was a handy trick for an absentminded vampire, although it would make my enemies harder to kill. Tit for tat, I guess.”
“It is far harder to kill a phantom than a reality.”
“Habits are a lot harder to kill than people. ~ Axe Cooper”
“Strong people are harder to kill than weak people and more useful in general.”
“It's harder to make the glass than break the glass.”