it happens often in the twenty-ninth year of life that all the forces that have been engaged through the years of childhood, adolescence and youth in confused and ferocious combat range themselves in ordered ranks
Tarnas adduces extended historical testimony to demonstrate that the Saturn Return at year twenty-nine consistently marks the narrowing of diffuse youthful possibility into formed, purposive adult identity.
, Cosmos and Psyche: Intimations of a New World View, 2006thesis