A noble man compares and estimates himself by an idea which is higher than himself; and a mean man, by one lower than himself. The one produces aspiration; the other ambition, which is the way in which a vulgar man aspires.

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Some day there is going to be a man sitting in my present chair who has not been raised in the military services and who will have little understanding of where slashes in their estimates can be made with little or no damage. If that should happen while we still have the state of tension that now exists in the world, I shudder to think of what could happen in this country

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Data from dose-response relationships are sometimes employed to estimate the expected tumour incidence at dose levels very much lower than those which could possibly be employed in conventional [animal] experiments. A number of mathematical models have been employed in such estimates and the results obtained vary considerably. Despite these uncertainties - and the possibly greater ones in extrapolating from animals to man - such models are often employed in some quarters to estimate the likely risk to man.

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Cost estimates are more reliable for ships you've been building for a long time.

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Society is like a schoolmaster who estimates boys according to their conformity to a standard that is easiest for running a school.

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[Regarding animal carcinogenicity tests on saccharin] Published risk estimates, starting from the same animal data but using various [statistical] models, differ by factors of over 5,000,000.

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I conceive that the great part of the miseries of mankind are brought upon them by false estimates they have made of the value of things.

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