In 1952, at the first World Humanist Congress, the founding fathers of IHEU agreed a statement of the fundamental principles of modern Humanism. They called it “The Amsterdam Declaration”. That declaration was a child of its time: set in the world of great power politics and the Cold War.
The 50th anniversary World Humanist Congress in 2002, again meeting in the Netherlands, unanimously passed a resolution updating that declaration: “The Amsterdam Declaration 2002”. Following the Congress, this updated declaration was adopted unanimously by the IHEU General Assembly, and thus became the official defining statement of World Humanism.