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1724 births1804 deaths18th-century German male writers18th-century German philosophers

Immanuel Kant

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Portrait of the philosopher Immanuel Kant, painted by Johann Christoph Frisch.

Immanuel Kant was a German philosopher born on April 22, 1724, in Königsberg, in the Kingdom of Prussia. He lived during a time called the Enlightenment, when people were trying to understand the world using reason and science. Kant is one of the most important thinkers from that period, and his ideas still influence many areas of learning today.

Kant wrote about many deep questions, such as how we know what we know, what is real, and what makes something right or wrong. In his famous book, the Critique of Pure Reason, he suggested that our minds shape the way we see the world, like how we use space and time to understand everything around us.

He also talked about morality, saying that our ability to reason helps us know what is right. Kant believed that beauty comes from looking at things without wanting anything from them. He even dreamed of a world where countries could work together for peace. His thoughts on religion, morality, and how we understand the world continue to be studied and discussed by people all over the world.

Early life

Immanuel Kant was born on 22 April 1724 in Königsberg in East Prussia (now Kaliningrad Oblast, Russia) to a Prussian German family of Lutheran faith. He was the fourth of nine children, and grew up in a home that valued religious devotion and strict discipline. Kant studied at the Collegium Fridericianum and later attended the University of Königsberg, where he explored the ideas of philosophers like Gottfried Leibniz and Christian Wolff.

Kant's early life was marked by a strong focus on learning and personal growth. After his father's death, he worked as a private tutor while continuing his research. Despite never marrying, Kant became a well-liked teacher and author, known for his consistent daily routine and dedication to his work.

Early work

Kant's house in Königsberg in an 1842 painting

Kant made many important ideas before he became famous for his big books. In 1754, he thought about how the Moon affects Earth’s spin. He also wrote about how the Solar System might have started from a big cloud of gas. In 1755, he started teaching at a university and talked about many subjects like math and physics. He even wrote about winds and how Earth shakes during earthquakes.

Kant kept writing and thinking about big questions. In 1770, he became a professor and wrote about how we know things. Later, in 1781, he published a very important book called Critique of Pure Reason. In this book, he tried to answer big questions about how we understand the world. Even though it was hard to read at first, people slowly began to see how important his ideas were.

Later work

Kant with friends, including Christian Jakob Kraus, Johann Georg Hamann, Theodor Gottlieb von Hippel, and Karl Gottfried Hagen

Kant revised his important book Critique of Pure Reason in 1787 and continued to write about many areas of philosophy. He published works on moral philosophy, like Critique of Practical Reason in 1788 and Metaphysics of Morals in 1797. In 1790, he wrote Critique of the Power of Judgment, which looked at beauty and nature.

Kant also wrote essays on history, religion, and politics. Even though he became very famous, some of his students changed his ideas in new ways. Near the end of his life, Kant spoke out against these changes. In 1800, one of his students published a logic manual that Kant had helped prepare.

Death and burial

Kant's tomb in Kaliningrad, Russia

Immanuel Kant's health declined over time, and he passed away in Königsberg on February 12, 1804. His final, unfinished work was later published as Opus Postumum. Kant was known for his simple, strict daily routine.

Kant's tomb is located next to Königsberg Cathedral in Kaliningrad, Russia, in a special building called a mausoleum. This was built in 1924 to honor him. Originally, his remains were inside the cathedral, but they were moved over time. Even today, people often visit his mausoleum. Unfortunately, many items that once belonged to Kant were lost during World War II. A statue of Kant was later placed nearby. The university where Kant taught is now known as Immanuel Kant Baltic Federal University.

Philosophy

Like many thinkers of his time, Immanuel Kant was deeply influenced by the scientific discoveries of Sir Isaac Newton. These discoveries made people question traditional ideas about politics and religion. Kant wanted to protect human freedom and morality while still accepting the advances in science.

Bust of Kant by Emanuel Bardou, 1798

Kant wrote several important books, including the Critique of Pure Reason. In this book, he asked three big questions: What can I know? What should I do? What can I hope for? He argued that we must think of ourselves as free, even though we can't prove it with certainty. His other works, like the Groundwork of the Metaphysics of Morals and the Critique of Practical Reason, explore moral philosophy further.

Kant's ideas placed the human mind at the center of understanding the world. He believed that our minds shape our knowledge and that acting freely means following rational moral principles.

Table of Judgements
A prioriA posteriori
Analyticanalytic a priori (e.g., "All bodies are extended.")analytic a posteriori (impossible)
Syntheticsynthetic a priori (e.g., "Every effect has a cause.")synthetic a posteriori (e.g., "The solar system has eight planets.")

Influence and legacy

Poster celebrating the 300 years of the University of Königsberg, 1844. Among others, Kant and Johann Friedrich Herbart are honored.

Kant changed the way people think about philosophy. He showed that what we know depends on how our minds work. He said that we can only really know things through our own experiences and senses. Kant also talked about doing what is right because it is our duty, not just because it feels good.

Many famous thinkers were inspired by Kant’s ideas. His work influenced many areas, including politics, science, and art. Even today, people still study Kant to understand big questions about knowledge, right and wrong, and what it means to be human.

Images

Portrait of Immanuel Kant, an important German philosopher from the 1700s.
Portrait of David Hume, an 18th-century Scottish philosopher.
Statue of the philosopher Immanuel Kant at a university in Belo Horizonte, Brazil.
Statue of the philosopher Immanuel Kant at Kaliningrad State University in Russia.
A stamp celebrating the 250th birthday of the famous philosopher Immanuel Kant.
A classical bust of the ancient Greek philosopher Socrates.
Portrait of the philosopher Immanuel Kant painted in 1792.
Portrait of the philosopher Immanuel Kant from the 1700s.

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