THE REPUBLIC OF THE LOWER TIERS

For years, Tom Linden spoke the language of optimization. Distributed systems, risk assessment, stakeholder alignment. He was, by every conventional measure, highly competent. Then one morning the part of him that knew how to care about that world quietly packed its things and left.

What came next was not a plan. It was a garden - three terraced tiers above a lagoon on South Africa's Garden Route, and the slow work of laying masonry steps, each one, as he puts it, a small argument against abstraction.

The Republic of the Lower Tiers is the chronicle of a year in that garden, governed by its non-human citizens: Marmite, a black cat who audits the estate daily and has never once been consulted about the weather; Dipper, for whom every wet morning of clover is an unearned gift; Bella, ancient and certain, on her sun-warmed stone; and a wild robin who will take a worm from the table only on her own terms - terms Tom slowly discovers he was never the one setting.

It is also, almost in passing, one of the most honest accounts of a long marriage in recent memoir: not marriage as drama, but as daily practice - Laetitia setting down a second cup of coffee without comment, saying "That'll hold," and going back inside.

There are no epiphanies here, no three-step path to anything. The corporate life is not fled but dismantled, gently, stone by stone. What accumulates in its place - like snow, a single flake at a time - is a way of meeting the world rather than mastering it.