Thales of Miletus

Hello! My name is Thales. I lived a very, very long time ago in a sunny city by the sea called Miletus, in a place we now call Ancient Greece. I was born around the year 624 BCE. Ever since I was a little boy, my head was full of questions. I would look at the sky, the sea, and the land and wonder, 'How does all of this work?' I didn't want to just accept old stories; I wanted to find answers for myself!

The stars and the sun were my favorite things to study. I learned all I could about them, even traveling to faraway places like Egypt to gain more knowledge. One of my most famous moments happened in the year 585 BCE. I used my understanding of the sky to predict that the sun would disappear for a little while during the day! This is called a solar eclipse. When it happened, two armies were in the middle of a big battle. They were so surprised and scared when the sky went dark that they stopped fighting and made peace.

I had a very big idea about the world. After thinking and observing for a long time, I decided that everything—the ground, the plants, and even us—was made from water. It might sound silly now, but it was a new way of thinking! Instead of saying gods made everything happen, I tried to explain the world using something natural that everyone could see and touch. I believed the Earth itself was a big island floating on a giant sea of water.

Besides the stars, I loved geometry, which is the study of shapes and lines. I discovered some important rules that are still used today. One time, when I was in Egypt, I amazed everyone by figuring out how tall the giant pyramids were. I didn't need a huge ladder! I just used the pyramid's shadow and a little bit of math. It was like solving a fun puzzle. I showed that by using our minds, we could measure and understand almost anything.

I lived a long and curious life, for about 78 years. Though my time on Earth ended around 546 BCE, my ideas lived on. People remember me as one of the very first philosophers and scientists. I taught everyone that it's important to ask 'Why?' and to look for answers in the world around us. My love for curiosity and reason helped start a whole new way of thinking that we still call science and philosophy today.