Bertrand Russell, a Nobel laureate, was a prominent advocate for peace and disarmament. His activism spanned several decades, particularly during and after World War I and World War II, where he spoke out against militarism and nuclear weapons. Russell's philosophical writings emphasized the importance of rational discourse and critical thinking in resolving conflicts. He co-founded the Campaign for Nuclear Disarmament and used his platform to address global peace issues, leaving a timeless legacy of humanitarianism and advocacy for a better world.