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All observations are liable to error; no telescope is perfect, no leveling instrument entirely trustworthy; no instrumental graduations are exact and no observer is infallible.
Horace H. Hayden
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You do what you can for as long as you can, and when you finally can't, you do the next best thing. You back up but you don't give up.
Chuck Yeager
Horace H. Hayden
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Born:
October 13, 1769
Died:
January 25, 1844
(aged 74)
Bio:
Horace Henry Hayden D.D.S. was the first licensed American dentist and dentistry school founder.
Horace H. Hayden on Wikipedia
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