The actual quote from 1884 seems to have been:
"The advancement of the arts, from year to year, taxes our credulity, and seems to presage the arrival of that period when human improvement must end." - Henry L. Ellsworth
Either way we have a lot of things but it's not quite STTNG yet. There's no limit to how much more we can do.
https://quoteinvestigator.com/2023/06/23/invented/
The actual quote from 1884 seems to have been: "The advancement of the arts, from year to year, taxes our credulity, and seems to presage the arrival of that period when human improvement must end." - Henry L. Ellsworth
Either way we have a lot of things but it's not quite STTNG yet. There's no limit to how much more we can do.