"Shakespeare doesn't belong to the past. If his material is valid, it is valid now. It's like coal. The only meaningfulness of a piece of coal starts and finishes with its combustion, giving us light and heat. And that to me is Shakespeare."

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It is very different to make a practical system and to introduce it. A few experiments in the laboratory would prove the practicability of system long before it could be brought into general use. You can take a pipe and put a little coal in it, close it up, heat it and light the gas that comes out of the stem, but that is not introducing gas lighting. I'll bet that if it were discovered to-morrow in New York that gas could be made out of coal it would be at least five years before the system would be in general use.

— Thomas A. Edison