Re: Difficulty with coworker / new job
I have a rule within the workplace, with both my colleagues and students, which is: Never talk Religion, Sport or Politics.
This especially the case with students, as I dont want that kind of influence on their lives. I am there to teach the mind how to think for itself, not to draw conclusions for other under the guise of free thinking.
The only time I will discuss R.S.P is if im certain that it will be a worthwhile discussion/debate, which is 99 times out of 100, with those I consider friends.
For your situation, do what I do, make it 100% clear that these issues (or whatever it is this guy wants to discuss) are not up for discussion, at all.