There's just so much there, TE - much of which you gents covered already.
It's interesting his take on what helps a course remain relevant and prevents it from becoming obsolete, namely a trust in nature.
(What's implied there, given that Mr. Batchelder was asking his opinion of a Myopia that hadn't been altered to accommodate the longer game and that Jones suggests in his reply that lengthening a course to keep up with technology is not necessary, is that for Mr. Jones preventing low scores or protecting par were not what good architecture was about. He obviously came from a mindset in which "bringing a course to its knees" was not an important consideration, one way or another. It's ironic that, then and now, golfers of vastly less skill that Mr. Jones are prone to that way of thinking.)
But how can nature actually manifest itself on a golf course (and affect play)? There's only two things, it seems to me - the wind, of course, and the ground...and for inland golf I'd imagine that the ground is the more important manifestation. The natural lay of the land, with its slopes and hollows and undulations, is that bit of nature that the golf ball comes into contact with, and so Jones seems to be saying that as long as what happens to the ball after it hits the ground was was left as 'natural' as possible, it would serve as constant and never out of date shot-testing and skill-testing and judgement-testing component of the game...which is what good architecture is supposed to allow for.
And maybe this line of thinking is related to Behr's emphasis on the fact that, in golf, the ball is not vied for, i.e. your opponent is not another golfer trying to affect or control your golf ball, which leaves only the wind and the ground (nature) to serve that role/function.
I'd imagine that any architect today who creates courses under 7,000 yards and uses/allows natural features and resists the urge to protect par is probably thinking much as Bobby Jones did.
Peter
PS - if Bob Crosby is reading this, your posts on the other thread about Jones' 'early years' were really good. Here's my vote for you gathering some of those insights and details in an essay. I'm sure you don't need the extra work, but I'm also sure that we can never get enough of Jones...