ns, and he has learned to observe with x-rays as well as with visible light. Organic chemistry was established in the nineteenth century, and by the beginning of this century, it was clear that this approach could be applied to the study of living systems. Biologists have had to learn a new anatomy - the anatomy of molecules. Chemists and physicists have penetrated the atom, first finding the elementary particles and then moving still deeper into the realm of wave mechanics. The discovery of the wave properties of the electron has given a deep insight into the nature of biological reactions.
             As scientists attempt to understand a living system, they move down from dimension to dimension, from one level of complexity to the next lower level. I followed this course in my own studies. I moved from anatomy to the study of tissues, then to electron microscopy and chemistry, and finally to quantum mechanics. This downward journey through the scale of dimensions has its irony, for in my search for the secret of life, I ended up with atoms a
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