Answer:
He has one and a person has two. A citizen has three. And a human being has four. A personality has five. And an inhabitant of earth has six.
What bird can lift the heaviest weight?
What instrument can make any sound and be heart, but not touched or seen?
What can be swallowed, But can also swallow you?
It can pierce the best armor and make swords crumble with a rub, yet for all its power It can't harm a wooden club.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?