Albert Einstein

Where did Einstein's curiosity come from?

Einstein was five and sick in bed when his father handed him a compass. The needle kept swinging back to north, pulled by something he could not see or touch. He never got over it. He remembered that compass as a turning point for the rest of his life. What he took from it was not an answer. It was a habit, and the habit was this: keep asking about the ordinary thing nobody else is asking about. Everything he became famous for started that way, with a plain question a child could ask.

• Wonder doesn't oppose analysis. It sharpens it by opening the mind to unexpected insights.
• Breakthrough thinking starts with simple, curious questions, not complex methods.
• Maintaining 'holy curiosity' through life sustains both scientific progress and personal growth.

Listen to the story “Wonder and Curiosity”

What did Einstein spend his last thirty years on?

On one question, and he never answered it. Einstein believed the forces of nature are pieces of a single thing, and he wanted one theory that held them all. He had already joined space to time, and mass to energy, so the idea was not wild. He worked on it at Princeton until he died in 1955, and he grew more isolated as he went. Most of physics had moved on without him. He kept going anyway. That is the part worth borrowing. He was willing to spend thirty years on a question he might never close, because he thought it was the right question.

• Unification seeks to explain diverse phenomena through a single underlying framework.
• Einstein's earlier successes (space-time, mass-energy) inspired his unified field quest.
• Simplicity and mathematical harmony can serve as guides for theory development.

Listen to the story “Unified Field Vision”

Did Einstein help build the atomic bomb?

He did not work on it. He did sign a letter. On August 2, 1939 he put his name to a letter to President Roosevelt. The physicist Leo Szilard had drafted it, urging the United States to act on atomic research. Einstein was a pacifist. He signed because he was afraid Nazi Germany would get there first. His own equation, E=mc², is part of why such a weapon was possible at all. Afterwards he went back to arguing for disarmament. On April 11, 1955, a week before he died, he agreed to sign a public appeal against nuclear war.

• Scientific discoveries can have unintended applications with serious ethical weight.
• Scientists bear responsibility not just for discovery but for thinking through its applications.
• Ethical positions must evolve as circumstances and knowledge change.

Listen to the story “Scientific Responsibility”

What did Albert Einstein teach?

Albert Einstein taught that space and time are one fabric, not two separate backdrops. Two people can disagree about whether two things happened at the same moment, and both can be right. It depends on how each of them is moving. He also showed that mass and energy are the same thing in different clothes, in a three-page paper received on September 27, 1905. Ten years later he finished the field equations, on November 25, 1915, and gravity stopped being a force. It became the shape of space and time, bent by whatever sits in it.

What is a thought experiment?

A thought experiment is an experiment you run in your head, with the rules of physics still switched on. Einstein worked this way his whole life. At sixteen he imagined flying next to a beam of light, matching its speed exactly. What would he see? A wave standing still. Maxwell's equations, the accepted physics of light at the time, said that cannot happen. The picture broke, and the crack in it pointed him toward relativity.