If I Could Solve All

I Would Construct And Work Along Various Lines Until I Found Them Untenable. When One Theory Was Discarded, I Developed Another At Once. I Realized Very Early That This Was The Only Possible Way For Me To Work Out All The Problems.

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.

I Never Perfected An Invention That I Did Not Think About In Terms Of The Service It Might Give Others... I Find Out What The World Needs, Then I Proceed To Invent.

I Know Of Over 3,000 Ways [that] A Light Bulb Does Not Work.

The Chief Function Of The Body Is To Carry The Brain Around.