“In the first solution of Isoperimetrical problems, the Bernoullis use diagrams and their properties. Euler, in his early essays, does the same; then, as he improves the calculus he gets rid of constructions. In his Treatise”

— Robert Woodhouse

A Treatise on Isoperimetrical Problems, and the Calculus of Variations (1810)
Context: There is another point... and that is the method of demonstration by geometrical figures. In the first solution of Isoperimetrical problems, the Bernoullis use diagrams and their properties. Euler, in his early essays, does the same; then, as he improves the calculus he gets rid of constructions. In his Treatise [footnote: Methodus inveniendi, &c. ], he introduces geometrical figures, but almost entirely, for the purpose of illustration: and finally, in the tenth volume of the Novi Comm. Petrop. as Lagrange had done in the Miscellanea Taurinensea, he expounds the calculus, in its most refined state, entirely without the aid of diagrams and their properties. A similar history will belong to every other method of calculation, that has been advanced to any degree of perfection. <!--Preface p. vii-viii

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Robert Woodhouse 7

English mathematician 1773–1827

James Gow (scholar) (1854–1923) scholar

p, 125
A Short History of Greek Mathematics (1884)

“In 1735 the solving of an astronomical problem, proposed by the Academy, for which several eminent mathematicians had demanded several months' time, was achieved in three days by Euler with aid of improved methods of his own… With still superior methods this same problem was solved by the illustrious Gauss in one hour.”

Florian Cajori book A History of Mathematics

Source: A History of Mathematics (1893), p. 248; As cited in: Moritz (1914, 155); Persons and anecdotes.

“He who does not improve his temper together with his understanding, is not much the better for it.”

John Mason (1706–1763) English Independent minister and author

A Treatise on Self-Knowledge (1745)

“The junk merchant doesn't sell his product to the consumer, he sells the consumer to his product. He does not improve and simplify his merchandise. He degrades and simplifies the client”

William S. Burroughs book Naked Lunch

Introduction
Naked Lunch (1959)

“The junk merchant doesn't sell his product to the consumer, he sells the consumer to his product. He does not improve and simplify his merchandise. He degrades and simplifies the client.”

William S. Burroughs (1914–1997) American novelist, short story writer, essayist, painter, and spoken word performer

"Letter from a Master Addict to Dangerous Drugs", written in 1956, first published in The British Journal of Addiction, Vol. 52, No. 2 (January 1957), p. 1 and later used as footnotes in Naked Lunch