(from p.1; Translated by William Weaver)
The equations of the gravitation field which relate the curve of space to the distribution of matter are already becoming common knowledge.
Since there were no reference points, I had no idea whether my fall was fast or slow. Now that i think about it, there weren’t even any proof that i was really falling: perhaps I had always remained immobile in the same place, or I was moving in an upward direction; since there was no above or below these were only nominal questions and so i might just as well go on thinking i was falling, as I was naturally led to think.”