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The two eyes of exact science are mathematics and logic: the mathematical sect puts out the logical eye, the logical sect puts out the mathematical eye; each believing that it can see better with one eye than with two.

— Augustus De Morgan

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More quotes by Augustus De Morgan

The lowest steps of the ladder are as useful as the highest.

On the Study and Difficulties of Mathematics (1831)

The moving power of mathematical invention is not reasoning, but imagination.

If much difficulty should be experienced in the elementary chapters, I know of no work which I can so confidently recommend to be used with the present one, as that of M. Duhamel.

The Differential and Integral Calculus (1836)

The work now before the reader is the most extensive which our language contains on the subject.

The Differential and Integral Calculus (1836)

I am far from saying that this Treatise will be easy; the subject is a difficult one, as all know who have tried it.

The Differential and Integral Calculus (1836)

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Quote text and notes from Wikiquote: Augustus De Morgan (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.