It's very easy to know The Truth. Anyone who disagrees with you merely does not understand you, because it is not possible for someone to understand what you say and still disagree with you. Therefore, someone who claims to understand you and still disagree with you either lies about understanding you and is stupid or is wilfully disagreeing with the obviously right thing and is evil. Explanations are best when they are as long and discursive as possible. Misunderstanding is a door that must be battered down with as much force as possible. Repeating something makes it both more true and more understandable. Repeating something makes it both more true and more understandable. Repeating something makes it both more true and more understandable. The worst traits of any member of any group that is not your group is and should be taken as normative for the entire group. Any member of such a group who does not obviously display those traits is just "hiding" or "pretending" to put on a good public face. "No true Scotsman" is a fallacy when used by members of these groups. The best traits of any member of your group are normative for your entire group. Anyone within your group who does not have those traits isn't a "real" member of your group, so they can be ignored. "No true Scotsman" is an axiomatic principle when used by members of your group. Do NOT, under any circumstances, read the actual writings produced by an enemy group. This will contaminate you. You must only read writings produced by your group, by Great Teachers you admire, and by others who agree with you. They will explain what the Outsiders really believe and do to you and for you. Web sites are better sources for The Truth than are books or professional journals.