Comment by joncrocks

The commonly repeated phrase:

All of humanity's problems, stem from man's inability to sit quietly in a room alone. - attributed to https://en.wikipedia.org/wiki/Blaise_Pascal

I think it's someone paraphrasing from the original text.

https://philosophy.stackexchange.com/questions/69487/why-did...

https://en.wikipedia.org/wiki/Blaise_Pascal