I happen to have discovered a direct relation between magnetism and light, also electricity and light, and the field it opens is so large and I think rich.
Why, sir, there is every probability that you will soon be able to tax it!
Said to William Gladstone, the Chancellor of the Exchequer, when he asked about the practical worth of electricity.
Who would not have been laughed at if he had said in 1800 that metals could be extracted from their ores by electricity or that portraits could be drawn by chemistry.
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