"It is absurd to hold that a man ought to be ashamed of being unable to defend himself with limbs, but not being able to defend himself with speech and reason, when the use of rational speech is more distinctive of a human being than the use of his limbs" - Aristotle
Words are better to use than your limbs. It is okay not to be able to fight. You can use words to get the same or even better point across. Using force only will make things worse.