That's an archive of the article it's originally from, from the NYTimes - "Flying Machines Which Do Not Fly", October 1903. The Wright Bros first successful flight would come in December 1903. The NYTimes also similarly published about the impossibility of spaceflight relatively shortly before it happened.
I anxiously await the day for the NYTimes to dismiss colonizing Mars as impossible, as it means we are most certainly on the cusp of achieving exactly that.
Contrast to the moon. The prestige was great, the investment enormous. The return was more-or-less zero. There was a reason Apollo 18 was canceled, and we stopped going.
(Current efforts are in no rush, and are mostly about prestige.)
The value of a colony on Mars is precisely zero. We might visit a couple times. But colonize? Nope.
Assigning zero long term value however to another entire planet worth of resources just seems like a failure of imagination.
You can't get to the 777 without the Wright Flyer.
And I think once we start iterating on these concepts, the timelines might not be as long as might otherwise be expected. Forget the 777 - it's completely stupefying that we went from the Wright Flier to the SR-71 Blackbird [1] in 61 years. That beast is another product of the magic of the 60s - long-term sustained flight at Mach 3.2 - 2450+mph. London to New York in less than 2 hours. There really was something in the water in the US in the 60s.
[1] - https://en.wikipedia.org/wiki/Lockheed_SR-71_Blackbird
So I think the comparison with flight is perfect. Imagine after the Wright Bros. flight, which countless people had died in the process of seeking to achieve, we had one uninvolved entity able to say 'yeah, I'm responsible for all this' and then canceled everything in a simple self-motivated political calculation to try to 'go out on top' so to speak.
The Moon was never the goal, anymore than the Wright Flyer was the goal. It was one small step on a very lengthy journey - a major milestone for sure, but nowhere near the end of the road. And that's where we remain in space, but thanks to the fact that so much expertise was lost in the ~60 year do-nothing era, we're now having to essentially start over. On the bright side, this time the driver's going to be private industry, just like with airplanes - and there will be no myopic politician to cancel it.