I work for justice by standing up against bullies and being a peacemaker when things get heated between people. I try to make it so that we can all live in harmony and realize that we are all children of God and should love each other as He loved us. (Sorry if this isn't Catholic enough I'm a Christian personally but I tried I promise)
It is necessary to give credit to the words and ideas from the original author because if you do not you are plagiarising also if you plagiarize while writing a book without quotations or referring to the author it is illegal.
Other nonverbal ways to display confidence include having good posture, maintaining appropriate eye contact, and smiling. Practicing ahead of time will help you appear competent, but you should listen carefully and make sure you are answering the question asked.