I remember reading something about writing once that suggested you should leave a sentence half written in order to pick it up more easily. I don't really follow it religiously but I am thinking it might not be such a great move as I am currently sitting and looking at the following.

Personal accounts of seventeenth and eighteenth century visitors reflect this ‘theatrical’ attitude toward the garden on two levels. First, the sense that the experience of garden could be...

I have absolutely no idea what either of the two levels I was thinking of could be. Hmm. Ponder ponder.