Art Quote by David Kahn

“soon as a culture has reached a certain level, probably measured largely by its literacy, cryptography appears spontaneously—as”

— David Kahn

“one of the essential elements of cryptography: a deliberate transformation of the writing.”

— David Kahn

“Roger Bacon held that three classes of substance were capable of magic: the herbal, the mineral, and the verbal. With their leaves of fiber,…

— Matthew Battles

Roger Bacon, a disciple of the Arabs, also insisted on the primary necessity of Mathematics, without which no other science can be known; yet…

— George Henry Lewes

Roger_Bacon" title="Roger Bacon">Roger Bacon expressed a feeling which afterwards moved many minds, when he said that if he had the power he would burn…

— George Henry Lewes

After Bruno's death, during the first half of the seventeenth century, Descartes seemed about to take the leadership of human thought... in promoting an…

— Andrew Dickson White

“The thirteenth-century philosopher Roger Bacon claimed that “nobody can obtain to proficiency in the science of mathematics by the method hitherto known unless he…

— Joshua Foer

“Grosseteste influenced Roger Bacon's ideas about mathematics and Nature. Bacon wrote hundreds of pages on the subject and, indeed, no historical figure has ever…

— John D. Barrow

[...] any fool can make a discovery. Every baby has to discover more in the first years of its life than Roger Bacon ever…

— George Bernard Shaw

From Roger Bacon, the 13th century Franciscan who pioneered the scientific method, to George Lemaitre, the 20th century Belgian priest who first developed a…

— Kenneth R. Miller

“Cryptology served magical purposes frequently throughout the Middle Ages, and even in the Renaissance was still disguising important parts of alchemical formulas.”

— David Kahn

“the most famous of all those who had an acquaintance with cryptology in the Middle Ages was an English customs official, amateur astronomer, and…

— David Kahn