This is a topic that came up during the Pledge of Allegiance discussion. If scientists, research or your textbook lists something as fact, but you don't agree with it for personal or religious reasons, do you still have an obligation to teach it as presented in the material? This is not centered on one issue, although there is one that is the most obvious example. This could be any statement or idea listed and/or presented as a "fact" in the textbook. Do you have an obligation to put your personal beliefs aside and go along with the book? If not, what approach could you take to avoid promoting personal beliefs instead of presenting the data objectively? If you cover the material as presented, but then add "I don't completely agree with this information personally", is that acceptable or are you unfairly influencing the thinking process of your students?