The German 10-Mark note (pre-Euro) featured Carl Friederich Gauß and his equation describing the “normal curve” of probability distribution.

A glorious mix of drama, inspiration, insight, good and bad judgement, hard work, and sometimes sheer luck mark the path of scientific discovery. This is seldom more clearly illustrated than in the quest to understand one of nature’s most remarkable phenomena, magnetism. The hidden source of its almost magical powers of attraction has been sought for over two thousand years. In this odyssey, creative human beings have moved from superstition to certainty and synthesis, from an era when answers to basic questions could only be imagined to the present time, in which scientists are able to incorporate magnetism into a great scheme of the basic forces in the universe. To see how progress was made is to watch the evolution of science. And by recognizing how scientists moved from superstition to synthesis, we are reminded a little of ourselves, as we struggle to dig out from under the welter of beliefs and prejudices about the ways of the world and strive for a clearer understanding of the mystery of our existence. There is every indication that once our curiosity is aroused, and given enough time, the human intellect can and does discover the answers to its questions. How this progress was manifested in the case of magnetism will be the theme of Hidden Attraction.
    The saga of discovery that led to the solution of the mystery of magnetism began over two thousand years ago, when explanations of natural phenomena could only take the form of beliefs rooted in fantasy. But, then, after many centuries individuals began to challenge dogma and superstition, and their questioning slowly and inevitably led to experimentation. That turned out to be the reliable way to get at the truth about the reality that underlies the appearance. The transition to experiment marked the birth of the scientific era, about four hundred years ago.
    I will argue that without the stunning progress made during the last several centuries in understanding the nature of magnetism, our modern technological civilization would not yet have come into existence. Every facet of the civilized world rests, ultimately, on the widespread availability of electricity to drive the machines of industry. We would never have learned to produce electricity if it were not for the profound insights that arose from the study of magnetism. As a result of ever-deeper probing into the nature of reality, we have even learned to reach out and sense magnetism between the stars.
    Hidden Attraction concerns an adventure of the mind, and these chapters have been conceived to trigger your imagination and stimulate your curiosity. An adventure of discovery underlies all of science, something that is easily ignored, in large part because of the mushrooming welter of facts that overflow the time available for their communication. Those who make judgements about what should be taught to stay “up-to-date” tend to rule against the human historical side of science. This is sad. As a result, the curricula of our schools lose touch with the dramatic and exciting roots of human thought.

Verschuur, Gerrit L. “Hidden Attraction: The Mystery and History of Magnetism”, Oxford University Press 1993, pp. v-vi.