What do you think a good speaker should have in order do convince people to agree to his / her idea?

For me I think when you one of speaker, you must have a good communication to convince people what you want to give…A good speaker must have a skill to attractive interest all people to hear what are you want to say.

For example choose a good topics or a new topics, sometimes can attract people to hear your speech. The spontaneous can give a good feedback to audience to hear your speech in the end…

Not all of people can give a good speech. Only the people have interest about speech can explain and story everything. You must study first about the topics what you want to give a speech. A good speaker must have a knowledge about everything because when the people hear your speech, they like your speech. Nothing is possible they will comeback to see your speech again…