John D. Eisenfelt was an intelligent boy. In primary school, no one really got a grip on him. His strength was that he could quickly put himself in the shoes of fellow human begins and therefore he could empower them. He had a different perspective on things, which enabled him to solve problems in a creative and innovative way.

Twenty years later, John D and Sandy were waving goodbye to there three children as they left for high school in the morning. ‘The Principles’ by John D Eisenfelt had by then become a household name in the United States. They were applied to all sorts of areas of science. They often formed the basis for an entirely new perspective; a new way of looking at all kinds of more or less entrenched issues.

His Main achievement, John D Eisenfelt himself stated, was not inventing principles. ‘It’s about what it does, not what it is,’ he once said during a speech at a prestigious university. The principles had only one purpose: to raise questions. Hence he always ended his speeches with: “Whenever you have a problem, try to find the questions, not the answer.”