I've wanted to become a‎ polymath‎ for a long time and could never find an actual playbook for it, so over the past three months I built the one I wished existed. Posting here because I suspect some of you are on the same path and looking for the same things. Not selling anything. Everything is free to read on my website, and the textbook list is just a list.

**The 21st Century Polymath.** The thesis. Why this is the first era where pursuing polymathy is structurally realistic again, plus the four-part method I actually use. [\[link\]](https://amansiddiqui.com/polymath)

**The Civilization Library.** A curated list of \~3,000 professional-grade textbooks across every major field of human knowledge (\~1.5 billion words, 1,132 domains). The modern, complete version I couldn't find anywhere else. [\[link\]](https://amansiddiqui.com/library)

**POLY.** A private local AI grounded in that whole library plus 10M words of my own writing, so I can pull real textbook pages with page-level citations instead of secondhand summaries. I'll open-source the method once it's polished, so anyone can build their own. [\[link\]](https://amansiddiqui.com/poly)

**The Accidental Library.** The origin story. I set out to design a semiconductor chip, the AI models failed me on the real engineering, and the textbook collection I built to fix that quietly became the most important project I've ever built. [\[link\]](https://amansiddiqui.com/the-accidental-library)

Short version of the method: track the frontier, work a hard question through the models one at a time, take what you learn into a knowledge base you actually trust, then build something that forces you to use it across fields.

Happy to answer anything about how it's built or how I curated the list. 

Note: the POLY interface shown is my own design and build. I wrote this post myself, with minor AI help from Claude for structure.

I spent the last 3 months building a full system for becoming a polymath in the 21st century. Sharing all of it free in case it helps anyone here.