Gottfried Wilhelm Leibniz

Hello. My name is Gottfried Wilhelm Leibniz. I was born a very long time ago, on July 1st, 1646, in a German city called Leipzig. My father had a library filled with books on every topic you can imagine. Even though I was little, I loved spending all my time in that library, reading and learning about the world. I was so curious, and I knew I wanted to spend my life discovering new things.

I always loved numbers and solving puzzles. I thought, 'What if I could build a machine to do math problems for me?' So, around the year 1673, I did. I invented a special machine called the Stepped Reckoner. It was a clever box with gears and a handle you could turn. Other machines could only add and subtract, but mine was special. It could also multiply and divide big numbers. It was one of the very first calculators ever made.

I kept thinking of new ways to work with numbers. I invented a new kind of math called calculus, which helps us understand how things change, like how fast a ball is rolling. A famous scientist named Isaac Newton also invented it around the same time, but the special symbols I created for calculus are the ones people still use today. I also discovered that you could write any number in the world using just two digits: 0 and 1. I called this the binary system. I thought it was a neat idea, but I had no idea that hundreds of years later, this simple system of zeros and ones would become the language that powers every single computer.

I spent my whole life asking questions, solving problems, and writing down my ideas. I was interested in everything from math and science to history and philosophy. I lived to be 70 years old, and my ideas continued to inspire people long after I was gone. Today, when you use a calculator or a computer, you are using ideas that I helped dream up. I hope my story shows you that being curious can lead to amazing discoveries that can change the world.