Authenticity In A Teacher

Authenticity is an important part of being a teacher.  I believe that students will be much more inclined to pay attention and work harder in a class if the teacher is authentic.  To me, a teacher who is authentic is a teacher that is animate about what he/she is teaching, and tries to show this love of a subject to his students.  I feel that if the teacher is positive and looks interested in what he/she is teaching, the students will as well.  On the flip side, a teacher who is not authentic will only teach what is necessary and one who does not look like they care about what they are trying to teach the students.  I feel that if the teacher isn't showing that they really love what they are teaching, there is no hope for the students to feel animate about that subject.