Our civilization has a thinking problem.

Not what we think.

How we think.

The Quantified Soul is about the language beneath the language—and why it's behind every problem we can't seem to solve.

We have more information than any civilization in history. And less shared clarity about what any of it means.

Our thinking breaks down under pressure. Individually, that looks like anxiety, loops, brain fog. Collectively, it looks like a world that can't solve the problems it can clearly see.

The problem isn't what we're thinking. It's the language our thinking is written in.

The problem isn't what we're thinking. It's the language our thinking is written in.

THE BOOK

The Quantified Soul

A Revolution in Science and Spirit

The soul isn't a metaphor. It's a mathematical object. And you can learn to read it.

An inquiry into why inner experience has structure, what happens when that structure fragments, and what coherence actually requires — individually and collectively. Drawing on neuroscience, Jungian psychology, ontological mathematics, and twenty years of clinical practice.

WHAT CHANGES

When the language shifts.

Your thinking clears.

The loops that won't stop. The fog that rolls in without warning. The feeling of knowing something clearly and not being able to act on it. These aren't random. They have structure—and when that structure shifts, the experience shifts with it.

Your relationships change.

When your thinking holds together under pressure, conversations stop snagging. You listen differently. You respond instead of react. People feel it—not because you're trying harder, but because something underneath has changed.

The stakes are civilizational.

When enough people can't think clearly under pressure, everything downstream suffers—families, organizations, politics, the ability to solve any shared problem at all. This isn't about individual improvement. It's about what becomes possible when minds can actually hold together.

KEY IDEAS

The framework in brief.

Coherence

The ability of parts to hold together as a whole — not by becoming identical, but by remaining in relationship. Coherence is structural, not moral. More coherent does not mean better as a person.

Constraint

What narrows possibility into form. Not limitation, but the condition of appearance. Without constraint, nothing specific can exist. Every structure is a pattern of constraints.

Syntax vs. Semantics

The structure of thought versus its content. Change the syntax — how thinking is organized — and the semantics follows. You don't have to fix every thought. You change the conditions that shape thinking.

Soul / Mind / Monad

Three words for the same thing, seen from different angles. Soul is its structure. Mind is its motion. Monad is its indivisible unity. You don't have a soul — you are one.

THE AUTHOR

James Croall

Neurotherapist, systems thinker, and former Silicon Valley engineer. Before turning to clinical neuroscience, James spent nearly thirty years in cybersecurity — protecting complex systems, mapping vulnerabilities, and learning what it takes to keep intricate architectures from falling apart. That work shaped everything that followed.

Now he runs Peak Mind Neurotherapy in San Francisco, where the framework described in this book is applied directly to the brain's regulatory systems through QEEG brain mapping and neurofeedback. The Quantified Soul emerged from the convergence of those two worlds — decades of working with complex systems, and the discovery that the most complex system of all was the one he'd been carrying around the whole time.

The investigation starts with one mind. Yours.

Read the first chapter—free, no commitment. Just the ideas.

Or follow the investigation as it unfolds.