GREENWICH MATHS CHALLENGE 2!!!

Here is the second Greenwich Maths Challenge, posted on Monday 7 December at 8pm. There will be a prize of a £10 token for the first correct solution received from a Greenwich student or a group of Greenwich students. Collaboration is encouraged. Your answers should be sent to A.Mann@gre.ac.uk. The judges' decision is final.

We have taken a quotation from a book by a famous mathematician (the views expressed are those of the mathematician in question and not ours!) and encrypted it using a substitution cipher. Your task is to decrypt the ciphertext below. (Line breaks are inserted uniformly after every 40 characters and have no other significance.) The cipher tools on Simon Singh's Code Book CD-rom may (or may not) be useful - this can be downloaded free from http://www.simonsingh.net/Code_Book_Download.html


MODSEGCQADGCQBRPBPLSOGCJDJQGKOSLDOGCJSJQ
DVSJQACJMODSEFBQDOCQUOSCORABGDISPWBFFHDO
SGDGHSODIWASJCDPRAYFUPBPTKOMKQQSJHDRCUPS
FCJMUCMDPIBSCJIGCQADGCQBRCFBISCPIKJKQBGG
KOQCFBQYGCYHDCPBFFYWKOIHUQLOKHCHFYCGCQAS
GCQBRBCJACPQADHSPQRACJRDKTWACQSVDOBQGCYG
SCJJKOJDSIADTSCOVDOYPSOBKUPFYQACQQADTUQU
OSWBFFHDUJDUPQQKABG …

JKKQASOPUHDDRQACPPURARFSCORUQKOUJCJBGKUP
FYCRRDLQSIPQCJICOIPCJIQADGSJWAKCODOSGDGH
SODICOSCFGKPQCFWCYPQAKPDWAKGSOBQBQGCQADG
CQBRCFTCGSBTYKUACVDQASRCPAQKLCYTKOBQBPKJ
DKTQASPKUJIDPQCJIPQSCIBDPQKTBJVSPQGDJQP

(And yes, the quotation in some ways reflects the period in which it was written!)