You might be interested in my book, Graham: 'Spirals: the Pattern of Existence' (Green Magic, 2nd edition, 2013). Here's a link, below, to my most-read article at Medium. All the best, Geoff https://geoffjward.medium.com/the-spiral-the-eternal-sign-of-the-creative-and-organising-principle-at-work-in-the-universe-8889ba092300?sk=42cde6e9d47901e4a893959e373cf87e