Paul Graham suggests that we should keep our identity small in order to have better arguments, especially on religion and politics:
More generally, you can have a fruitful discussion about a topic only if it doesn’t engage the identities of any of the participants. What makes politics and religion such minefields is that they engage so many people’s identities.
I totally agree, although I don’t think this perspective is new. I think it used to be called impartiality. This essay reminds me of the Hanson and Cowen paper, ‘Are disagreements honest?’