All mathematics is divided into three parts: cryptography…

Celestial mechanics is the origin of dynamical systems, linear algebra, topology, variational calculus and symplectic geometry.

— Vladimir Arnold

Cryptography has generated number theory, algebraic geometry over finite fields, algebra, combinatorics and computers.

— Vladimir Arnold

Ever since celestial mechanics in the skillful hands of Leverrier and Adams led to the world-amazed discovery of Neptune, a belief has existed begotten…

— Percival Lowell

“The hasty shake-and-bake nature of the Ymir expedition, which had stirred up so much controversy, had been forced by the implacable timeline of celestial…

— Neal Stephenson

It had more layers than an onion. These writers meant business. There was a level for everybody. Your major could be celestial mechanics, and…

— Billy West

To Napoleon on why his works on celestial mechanics make no mention of God: Your Highness, I have no need of this hypothesis.

— Pierre-Simon Laplace

“Face it, people, there is more to your malaise than celestial mechanics. If you want to know why you feel so bad, you must…

— James K. Morrow

I work in celestial mechanics, but I am not interested in getting to the moon.

— Marston Morse

My wish is to construct a system of sociology on the model of celestial mechanics, physics, and chemistry.

— Vilfredo Pareto

Lots of people working in cryptography have no deep concern with real application issues. They are trying to discover things clever enough to write…

— Whitfield Diffie

I believed then, and continue to believe now, that the benefits to our security and freedom of widely available cryptography far, far outweigh the…

— Matt Blaze

“Even though we don't know which companies the NSA has compromised – or by what means – knowing that they could have compromised any…

— Bruce Schneier

I thought cryptography was a technique that did not require your trusting other people-that if you encrypted your files, you would have the control…

— Whitfield Diffie

A colleague once told me that the world was full of bad security systems designed by people who read Applied Cryptography

— Bruce Schneier

Cryptography products may be declared illegal, but the information will never be

— Bruce Schneier