Originally Posted by MikeFontenot I'd like to see it. 
I thought it would be simple to find it amongst my papers but I was wrong. I have a collection of journal articles about 4 feet high and it will take a while to dig through them all and I have no plans on doing it in one day.
However the relevant passage is in my paper
Einstein's gravitational field which is online at:
https://arxiv.org/abs/physics/0204044
Einstein protested when Max von Laue stated that it was the Riemann tensor that was the only representation of the gravitational field and wrote a letter to him saying
... what characterizes the existence of a gravitational field from the empirical
standpoint is the nonvanishing of the components of [the affine connection],
not the vanishing of the [components of the Riemann tensor]. If one does
not think in such intuitive (anschaulich) ways, one cannot grasp why
something like curvature should have anything at all to do with gravitation.
In any case, no rational person would have hit upon anything otherwise. The
key to the understanding of the equality of gravitational mass and inertial
mass would have been missing.

I may have quoted him wrong though. I think it should have read "not the nonvanishing of the [components of the Riemann tensor]. "
I'll eventually find it though.
I recommend the reading the article
Why Einstein did not believe that general relativity geometrizes gravity which is available at
Why Einstein did not believe that General Relativity geometrizes gravity  PhilsciArchive
This article was published in a journal, i.e.
https://www.sciencedirect.com/scienc...55219813000695
By the way. I left home to do a bit of shopping, leaving those papers on the floor. When I got back I found that my cat Scooter peed on that paper. He's never studied GR so take that for what's its worth,