When I was born, or when I realized I had been, at least (and all that that entailed), I agreed to disagree with the universe. Or anyway I agreed with myself that I disagree with the universe.
So we're already there! On every point. Let's start from there! Start from disagreement, nothing acrimonious mind you just an acknowledgment that we came from widely separated places, along broadly divergent paths past widely different views to get here. Why should we assume agreement at the outset? We probably don't agree, and this is fine. The difference between persons should be a source of fresh wonder, daily! - not chagrin. So let us assume we disagree! From the outset, and then - come to agreement, happily, wherever we happen to, every chance we get to do it truly.
No one ever needs a new, fresh agreement with me, to disagree. That's a given when you walk in. And welcome! It's a welcome place, isn't it? This one? The universe, I mean. Well I think so anyway. I wasn't expecting agreement on it!
I think not expecting agreement from the universe (or on it) is the one single key to feeling welcome within it. A natural part of it.
Of course, anyone is 100% welcome and free to agree with me as well - on any point! They don't need my agreement for that, either. They don't need my permission. It would simply be a fact of their agreement with a point that I also hold. Agreement with me is not the issue. They happen to agree with that point.
Hell. If any point is true, it wasn't because I held it.