That’s a phrase that I heard recently, and I think that it’s from some famous philosopher, but uhm…
I don’t know how to debunk it.
I’m doing my best to believe without thinking too much about that.
Some days it gets hard tho, so I’d like to hear you guys’ take on it.
Funnily enough, I’m also a unitarian. Unitarianism (the denomination) was pretty popular until the middle of the last century when it was mostly absorbed into Unitarian Universalism, and other denominations (eg. Jehovah’s Witness) are still unitarian, so I wouldn’t call it a “keystone”.
Following the example of Christ is a keystone. True repentance is a keystone. Professing the Gospel is a keystone.