PRESENTATION OUTLINE
Ethos is the credibility or justification in what the author is saying or doing.
Here are some examples...
I am a great doctor, you should trust me.
My degree in physics makes me the most intelligent person in the room.
My pet snake is the #1 pet snake in the world, because he can swim under water.
I have taken care of you're children for 9 years, you can always rely on me.