Another fantastic case of creating intangible value to replace actual or material value, which remember, is what, after all, the environmental movement needs to be about: This again is from Prussia, from, I think, about 1812, 1813.
还有一个讲述创造无形价值来代替物质价值的 极好例子，就是， 终究，环保运动会触及的问题： 这个，同样，还是来自普鲁士，我想，大概1812或1813年左右。