For a brief report on a study of letters and their underlying logic, see
http://www.telegraph.co.uk/connecte...&sSheet=/connected/2006/04/18/ixconnrite.html
Here is an excerpt -- sounds philosophical to me:
"...the letters we use can be viewed as a mirror of the features of the natural world, from trees and mountains to meandering streams and urban cityscapes.
"The shapes of letters are not dictated by the ease of writing them, economy of pen strokes and so on, but their underlying familiarity and the ease of recognising them. We use certain letters because our brains are particularly good at seeing them, even if our hands find it hard to write them down. In turn, we are good at seeing certain shapes because they reflect common facets of the natural world."