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.

Until man duplicates a blade of grass, nature can laugh at his so called scientific knowledge.

I never did anything by accident, nor did any of my inventions come by accident; they came by work.

Our greatest weakness lies in giving up.

I am long on ideas, but short on time. I expect to live to be only about a hundred.

It has been just so in all my inventions. The first step is an intuition-and comes with a burst, then difficulties arise. This thing that gives out and then that-"Bugs"as such little faults and difficulties are called show themselves and months of anxious watching, study and labor are requisite before commercial success-or failure-is certainly reached.

Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.