All Thinkers

Thinkers Timeline

Key thinkers across history — grouped by era, colour-coded by discipline. Click any card to explore ideas, quotations, and classroom contexts.

Filter by subject area
1 thinker
Clear all filters
Early Modern — 1500 to 1800
Hugo Grotius 1583-1645 · Dutch Republic (Netherlands)
Hugo Grotius was a Dutch jurist, philosopher, and diplomat. He is often called the father of international law. He was born on 10 April 1583 in Delft, in the Netherlands. His Dutch name was Huig de Groot. The Latin form, Grotius, is the name he is now known by in most of the world. His family was educated and well-connected. His father had been mayor of Delft and a curator of Leiden University. Grotius was a child prodigy. He entered Leiden University at age eleven. He earned a doctorate in law in France at fifteen. He published his first books in his teens. He became a working lawyer and politician in his twenties. By thirty he was one of the most respected scholars in Europe. His political career ended badly. The Netherlands in his time was torn by religious and political conflict. Grotius supported one faction. When the other side won, he was sentenced to life imprisonment in 1619 in Loevestein Castle. After almost two years, his wife smuggled him out in a chest of books. He fled to Paris. It was in Paris, in 1625, that he published his masterpiece: De Jure Belli ac Pacis, On the Law of War and Peace. The book established the foundations of modern international law. Europe at the time was tearing itself apart in the Thirty Years War. Grotius wanted to find rules that could limit the violence and bring some order to relations between nations. He later served as Sweden's ambassador to France. He died on 28 August 1645 in Rostock, Germany, after his ship was wrecked on the Baltic coast. He was 62.
"I observed in the whole Christian world a license of fighting at which even barbarous nations might blush."