Codex Vivendi | Write What You Believe

Your Codex

A Document You Can Print, Frame and Pass On

This is not another social media profile that disappears into the noise.

Your Codex is a structured collection of what you believe and why, written for the people you love. When it is finished, you can generate a printable artifact. Something permanent. Something that outlasts you.

Your Codex has four parts

Life Principles: what you believe and why. The core of your legacy.

Identity: the values and influences that shaped you. Your inner and outer world.

Influences: the books, people and ideas you would recommend to someone who wants to understand you.

Wisdom: quotes and insights you return to. Words worth keeping.

A Father's Advice (2019) by Niklas Fjellman, the original life principles document exploring the meaning of life that inspired the Codex Vivendi platform.

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Niklas Fjellman's original Life Principles, the document that started Codex Vivendi

Trust and Transparency

Who Is Behind This

Niklas Fjellman, Founder of Codex Vivendi

The Founder

My name is Niklas Fjellman. In 2019, I wrote 30 life principles for my children: everything I wanted them to know if I was not around to tell them. That document became the prototype for Codex Vivendi.

I am not hiding behind a logo. You can read my Codex and see who I am. Read my Codex

The Community

You will not be alone. Contributors create Groups and Forums to discuss what matters. The conversations are real and the place is quiet enough to think.

Where We Are

Codex Vivendi is new. You will not find millions of people here yet. What you will find is a small group of early contributors who believe this matters. We are looking for more pioneers.

How We Handle Your Data

Your content is private by default. You choose what to share and with whom. We follow EU privacy law. We do not sell your data. If we ever share datasets with researchers, they are anonymized.

We use AI tools to help run the site and contributors may use AI tools to help articulate their thoughts. What matters is that a human stands behind every principle. Your Codex is yours.

Why This Matters Beyond Your Family

What if AI could learn from humanity at its best?

We believe in an optimistic future where humans, nature and Artificial Intelligence work together in harmony. But for AI to support human flourishing, it needs to understand what humans actually value.

Today, AI systems are trained on billions of words scraped from the internet: quick comments, heated debates and viral outrage. Humanity in reactive mode. That is not the whole picture of who we are.

When you write Life Principles for your children, you do not write your anxieties. You write what you actually believe when you think clearly. You write your wisdom for the people you love.

That is what we are gathering: reflective human values, articulated with care. A dataset that could help future AI systems understand not just what humans say in passing, but what we believe when we think about legacy.

We do not know if AI companies will use this data or if it will make any difference at all. But we believe beneficial AI needs better inputs and we believe it is worth trying. Your contribution matters beyond your own family tree.

Start With One Principle

Start by writing down just one thing you believe, something you would want someone you love to remember about you. The rest can come later.

Begin Your Codex

Free to start. No credit card required.