https://www.humanistischverbond.be/blog/1895/derde-brief-van-floris-van-den-berg-aan-sebastien-valkenberg/
Derde brief van Floris van den Berg aan Sebastien Valkenberg - Humanistisch Verbond
'One can see from space how the human race has changed the Earth. Nearly all of the available land has been cleared of forest and is now used for agriculture...
sebastien valkenberghumanistisch verbondbriefvan