2.
One is never just a teacher: One is always - even if not consciously - an advocate of a point of view, a critic of certain positions, an exemplar of someone trying to communicate, a purveyor of images, a practitioner of behavioral standards, a person dealing with, and indeed responsible for, others in common tasks. In teaching, at least, the role of moral agent is inescapable.
Robert Audi
4.
One may have a right to be unconventional and even eccentric, so long as one is fully competent and a decent person; but one's ideal as a professor should be to conduct oneself as an admirable human being: just, kind, tolerant, competent, committed, and good-humored.
Robert Audi