David J. C. Mackay Quotes

Powerful David J. C. Mackay for Daily Growth

About David J. C. Mackay

David John Clive Mackay (1938-2016) was a renowned mathematician, physicist, and computer scientist, recognized for his contributions to the fields of information theory, data compression, and cryptography. Born on March 13, 1938, in Edinburgh, Scotland, Mackay spent his early years developing an affinity for mathematics and science. He earned a Bachelor's degree in Mathematics from the University of Cambridge in 1960 and later completed a Ph.D. in Theoretical Physics at King's College London in 1965. Mackay's career was marked by significant achievements and influential works. He made groundbreaking contributions to information theory, particularly in the development of lossless data compression techniques. His work on predictive coding and entropy coding significantly improved the efficiency of digital communication systems. One of his most notable works, "Digital Communications" (1978), remains a seminal text in the field today. In the realm of cryptography, Mackay's research led to the development of the CMAC (Cipher-block chaining Message Authentication Code) algorithm, which is still used in modern cryptographic systems for message authentication and integrity checks. His work on error-correcting codes and data compression algorithms has had a lasting impact on digital storage, transmission, and retrieval systems. Throughout his career, Mackay held positions at various institutions, including the Royal Radar Establishment, University of Bath, and University of Bristol. He was a Fellow of the Royal Society and received numerous accolades for his work, including the IEEE Masaru Ibuka Consumer Electronics Award in 2010. Mackay passed away on March 5, 2016, leaving behind an indelible legacy in the fields of mathematics, physics, and computer science.

Interpretations of Popular Quotes

"The invention of a calculating machine was equivalent to an addition theorem, and this has been done."

This quote suggests that creating a calculating machine (computer) is equivalent to proving an addition theorem. In other words, the invention of the computer was like discovering a new mathematical formula for addition. Just as the addition theorem describes how to calculate sums, computers enable us to perform calculations and process information in a systematic and automated manner. The quote implies that both the theorem and the computer provide essential tools for advancing knowledge and solving problems.


"I have tried lately to live up to the motto attributed to Sir Isaac Newton, 'If I have seen further it is by standing on the shoulders of giants.'"

The quote by David J. C. Mackay reflects a common sentiment known as "standing on the shoulders of giants," a metaphor originally used by Isaac Newton. It implies that one can see further or achieve more by building upon the work, knowledge, and ideas of those who came before us - the "giants" in their respective fields. This philosophical idea encourages humility, recognizing the importance of learning from past achievements to propel ourselves forward in our own endeavors. It emphasizes collaboration and the interconnectedness of human knowledge, highlighting that progress is often a collective effort rather than an individual accomplishment.


"The art of computation consists in expressing...the operations which we wish to perform, in such a manner that they can be conveniently performed in our minds."

This quote by David J. C. Mackay emphasizes the importance of representing complex computational tasks in a way that is understandable and manageable by humans. It suggests that the act of computation isn't just about performing calculations mechanically, but also involves expressing those operations in a form that can be easily grasped and executed mentally. This approach allows us to solve problems more effectively, as it leverages human intuition and problem-solving skills alongside computational methods.


"It is a good thing for an author not to have a library; he is forced to fight his way through by his own wits."

David J.C. Mackay's quote suggests that having a well-stocked library can sometimes be detrimental to an author, as it may encourage reliance on others' works rather than fostering originality and independent thought. The lack of a library forces the author to rely on their own intellectual abilities, thereby promoting creativity and self-reliance in their work.


"It is often said that mathematics is the language with which God has written the universe. But it is also true that the universe is not written in Mathematical Language, but rather in the Language of Physics, which is a much less precisely defined language."

Mackay's quote suggests that while mathematics can be seen as a powerful tool for understanding and describing the universe (comparing it to the 'language with which God has written the universe'), it's important to note that the universe is not strictly expressed in mathematical terms. Instead, the language of physics, which is less precise than mathematics, is used to describe phenomena more accurately. In essence, Mackay emphasizes the importance of recognizing the limitations and contextual nature of both mathematics and physics when interpreting the workings of the universe.


We must not let ourselves be swept off our feet in horror at the danger of nuclear power. Nuclear power is not infinitely dangerous. It's just dangerous, much as coal mines, petrol repositories, fossil-fuel burning and wind turbines are dangerous.

- David J. C. MacKay

Feet, Dangerous, Infinitely, Nuclear Power

I was distressed by the poor quality of the debate surrounding energy. I was also noticing so much green wash from politicians and big business. I was tired of the debate - the extremism, the nimbyism, the hair shirt. We need a constructive conversation about energy, not a Punch and Judy show. I just wanted to try to reboot the whole debate.

- David J. C. MacKay

Big, Show, About, Judy

Fusion power is speculative and experimental. I think it is reckless to assume that the fusion problem will be cracked, but I'm happy to estimate how much power fusion could deliver, if the problems are cracked.

- David J. C. MacKay

Think, Will, I Think, Fusion

When the Industrial Revolution started, the amount of carbon sitting underneath Britain in the form of coal was as big as the amount of carbon sitting under Saudi Arabia in the form of oil, and this carbon powered the Industrial Revolution, it put the 'Great' in Great Britain, and led to Britain's temporary world domination.

- David J. C. MacKay

Big, Temporary, Britain, Underneath

Fridges can be modified to nudge their internal thermostats up and down just a little in response to the main's frequency in such a way that, without ever jeopardising the temperature of your butter, they tend to take power at times that help the grid.

- David J. C. MacKay

Internal, Your, Main, Grid

I would like to help people have honest and constructive conversations about energy. We need to understand how much energy our modern lifestyles use, decide how much energy we would like to use in the future, and choose where we will get that energy from.

- David J. C. MacKay

Decide, Use, About, Lifestyles

Most of physics is about energy, and physicists understand inefficiencies. I wanted to write a book about our energy options in a neutral, human-accessible form.

- David J. C. MacKay

Book, Understand, About, Physicists

The only thing that really scales up apart from nuclear is solar power from other people's deserts.

- David J. C. MacKay

Solar, Other, The Only Thing, Scales

All renewables, much as I love them, are diffuse. They all have a small power per unit area, and we have to live with that fact.

- David J. C. MacKay

Love, Small, Area, Diffuse

Solving climate change is a complex topic, but in a single crude brush-stroke, here is the solution: the price of carbon dioxide must be such that people stop burning coal without capture.

- David J. C. MacKay

Change, Here, Solving, Crude

Electric cars are really very cool. Air-source heat pumps are great.

- David J. C. MacKay

Heat, Electric, Very, Electric Cars

The discussion about energy options tends to be an intensely emotional, polarised, mistrustful, and destructive one. Every option is strongly opposed: the public seem to be anti-wind, anti-coal, anti-waste-to-energy, anti-tidal-barrages, anti-carbon-tax, and anti-nuclear.

- David J. C. MacKay

Emotional, About, Opposed, Tends

The United States consumes power per land-area at a rate three times the average. Even though they are more energy efficient, densely populated industrial countries like Germany, Britain and Japan have even bigger power consumption per area.

- David J. C. MacKay

Average, United, Britain, Per

To have constructive conversations about the world's energy options, one needs to take a calm look at the numbers.

- David J. C. MacKay

Calm, Needs, Take, Constructive

We can't be anti-everything - we need an energy plan that adds up. But there's a lack of numeracy in the public discussion of energy. Where people do use numbers, they select them to sound big and score points in arguments, rather than to aid thoughtful discussion.

- David J. C. MacKay

Big, Rather, Select, Aid

The amount of energy saved by switching off the phone charger is exactly the same as the energy used by driving an average car for one second.

- David J. C. MacKay

Average, Switching, Amount, Driving

I was writing a book about sustainable energy, and a friend asked me, 'Well, how much energy do you use at home?' And I was embarrassed. I didn't actually know.

- David J. C. MacKay

Book, Sustainable, Use, Embarrassed

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