The pen can kill a man; no knife is needed

Similar sayings:

Man must be sharpened on man, like knife on stone Man must be sharpened on man, like knife on stone
Kill the chicken to frighten the monkey Kill the chicken to frighten the monkey
Kill one to warn a hundred Kill one to warn a hundred
Kill a chicken before a monkey Kill a chicken before a monkey
Waiting for a rabbit to hit upon a tree and be killed in order to catch it Waiting for a rabbit to hit upon a tree and be killed in order to catch it

Chinese sayings and proverbs