Meet the four thinkers who figured out how the universe works - and learn to think like them.
Axi is an ordinary student until the strangest year of their life begins: a shimmer, a step through time, and suddenly they're standing beside the greatest minds in history at the exact moment of discovery.
In First Principles: The Physical World, Axi journeys to ancient Athens, Newton's orchard, the Galápagos Islands, and Einstein's Bern to meet four thinkers who changed everything:
- Aristotle - a framework for understanding anything
- Isaac Newton - the hidden laws that move an apple and the Moon alike
- Charles Darwin - how life shapes itself without a designer
- Albert Einstein - the surprising truth about space and time
Each of them used the same superpower: First Principles thinking - stripping away what you've been told and reasoning up from what must be true. Through vivid storytelling, clear diagrams, and hands-on challenges, readers don't just learn what these geniuses discovered; they learn how to think for themselves.
Perfect for curious minds ages 11-14, The Physical World is Book 1 of First Principles: A Young Thinker's Guide - a series that turns the history of big ideas into a toolkit for thinking clearly about anything.
What must be true?
