Quotation from: The Beasts of Tarzan

Written by: Edgar Rice Burroughs

Gust, after his own peculiar habit, had found means to delegate to
the others the actual taking of life. Not that Gust entertained
any scruples on the subject, other than those which induced in
him a rare regard for his own personal safety. There is always
a certain element of risk to the assassin, for victims of deadly
assault are seldom prone to die quietly and considerately. There
is always a certain element of risk to go so far as to dispute the
issue with the murderer. It was this chance of dispute which Gust
preferred to forgo.