Not Too Much Trust

I had a problem with our discussion in class on friday. For the majority of the class we talked about trust, and how do you earn a student's trust, and how can you show them that you as a teacher are trustworthy. But, I wasn't really buying it. We briefly discussed it, but I think that respect is more important than trust. First of all, I am an idealist, so I would like to think that not only does the majority of people don't lie, but also that if or when they do, it does not impact entire lives. Now with that being said, I agree that people do lie, and I am no exception, in fact maybe a more average fibber. But I, in my present condition, cannot see any reason why a teacher should ever lie! It seems contradictory to your profession. As a student, I never trusted my teachers, nothing against my teachers. And as a student I had no problem knowing that I couldn't be trusted, in fact hardly ever felt trusted.
Which is why I turn towards the notion that respect is far more important. Making sure that respect is reflexive and that neither teacher or student gives reason to be disrespected will lead to satisfactory trust. But, in my opionion, never should there be too much trust either way.