Thinking is one thing no one has ever been able to tax. - "Charles Franklin Kettering"

Thinking is one thing no one has ever been able to tax.
Charles Franklin Kettering

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There is a great difference between knowing and understanding: you can know a lot about something and not really understand it.
- Charles Franklin Kettering
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We should all be concerned about the future because we will have to spend the rest of our lives there.
- Charles Franklin Kettering