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Gold, though readily available, was considered a nuisance, since it was of no practical value due to its softness, excessive weight and its affinity for many catalysts.
There must be, too, a certain wearing out of the potency of the iodine with time. Even dead inorganic catalysts, made of simple elements, wear out after having been used time and time again. Though the thyroid is the supreme energizer, life is incompatible with a certain excess of it. Death can be produced by successive daily injections of its internal secretion.
The day is long past when a single man, like Caesar or Alexander, could bring about world-shaking changes." "True but not true," Ihjel said. "There are key men in every conflict of forces, men who act like catalysts applied at the right instant to start a chemical reaction. You might be one of these men, but I must be honest and say that I can't prove it yet.
The catalysts of a migraine being blood vessels that constrict blood flow as they dilate externally, and the headaches themselves being the reduced metabolism that is the consequence of the constriction and the dilation: she knew them and their impact well.
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