I came across this great quote from Lee Friedlander today:
" Landscape! The subject of landscape as a photographic possibility is both pleasurable and very difficult. The subject itself is simply perfect, and no matter how well you manage as a photographer, you will only give a hint as too how good the real thing is. ...
In my case, it is an old man's game. I needed to use all that I had learned, every trick, my best gear, whatever wit I was capable of, and I had to be as sharp and aware and immediate as a spark. When all of that is working, and I come home with something of interest and what I think is OK or even good, it's still only a touchstone or a fast glance at the real think itself."
intro to: Lee Friedlander, Photographs Frederick Law Olmstead Landscapes