It was the amateurs of cryptology who created the species. The professionals, who almost certainly surpassed them in cryptanalytic expertise, concentrated on down-to-earth problems of the systems that were then in use but are now outdated. The amateurs, unfettered to those realities, soared into the empyrean of theory.

David Kahn

Cryptocurrencies and Cryptography

Cryptocurrencies and Cryptography: From Milton Friedman to William Shatner

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I think the internet is going to be one of the major forces for reducing the role of government. The one thing that’s missing but that will soon be developed, is a reliable e-cash.

Professor Milton Friedman

423

But all those who used their knowledge in a bid to enact social change saw cryptography as a tool to enhance individual privacy and to shift power from big, central institutions to the human beings who live in their orbit.

Paul Vigna

322

Stay away from it. It’s a mirage, basically

Warren Buffet

250

If you care about liberty, the nonaggression principle, or economic freedom in general you should do everything you can to use Bitcoin as often as possible in your daily life.

Roger Ver aka Bitcoin Jesus Voluntaryist

218

Bitcoin is evil.

Paul Krugman

172

Bitcoin is a very exciting development, it might lead to a world currency. I think over the next decade it will grow to become one of the most important ways to pay for things and transfer assets.

Kim Dotcom

176

Cryptography is typically bypassed, not penetrated.

Adi Shamir

162

Bitcoin seems to be a very promising idea. I like the idea of basing security on the assumption that the CPU power of honest participants outweighs that of the attacker. It is a very modern notion that exploits the power of the long tail.

Hal Finney

144

We don’t really know how this coin is created. You can’t have a functional money without a basic transparency. Unless you are addicted to volatile trading for the sake of trading, stay away from the Bitcoin. Thankfully its plunge will be a salutary caution to most folks.

Steve Forbes

120

Bitcoin is the beginning of something great: a currency without a government, something necessary and imperative.

Nassim Taleb

124

The cryptocurrency community hasn’t decided whether they want to be anarchist rebels or to replace the establishment.

Adi Shamir

So my view’s quite clear. I believe cryptocurrencies, Bitcoin is the first example, I believe they’re going to change the world.

Richard Brown

Bitcoin gives us, for the first time, a way to transfer a unique piece of digital property, such that the transfer is guaranteed to be safe and secure, everyone knows that the transfer has taken place, and nobody can challenge the legitimacy of the transfer. The consequences of this breakthrough are hard to ove

Marc Andreesen

Virtual Currencies may hold long-term promise, particularly if the innovations promote a faster, more secure and more efficient payment system.

Ben Bernanke

It's money 2.0, a huge huge huge deal.

Chamath Palihapitiya

Bitcoin is just one example of something that uses a blockchain. Cryptocurrencies are just one example of decentralized technologies. And now that the Internet is big enough and diverse enough, I think we will see different flavors of decentralized technologies and blockchains.

Melanie Swan

I think decentralized networks will be the next huge wave in technology. The blockchain allows our smart devices to speak to each other better and faster.

Melanie Swan

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

Vladimir Arnold

If you guys want proof Bitcoin is real, send them to me, I’ll cash them out and feed homeless people.

Jason King

Bitcoin promises to take at least some of that power away from governments and hand it to people. That alone augurs significant political, cultural, and economic clashes.

Paul Vigna

Not afraid of heights - afraid of widths.

Thomas St Germain

Cryptography is the essential building block of independence for organisations on the Internet, just like armies are the essential building blocks of states, because otherwise one state just takes over another.

Julian Assange

Blockchain is the tech. Bitcoin is merely the first mainstream manifestation of its potential.

Marc Kenigsberg

Bitcoin is unstoppable.

Roger Ver aka Bitcoin Jesus Voluntaryist

The blockchain keeps everyone honest, and a whole layer of banking bureaucracy is removed, lowering costs.

Paul Vigna

Bitcoin was created to serve a highly political intent, a free and uncensored network where all can participate with equal access.

Amir Taaki

This may be the purest form of democracy the world has ever known, and I — for one — am thrilled to be here to watch it unfold.

Paco Ahlgren

Bitcoin is the currency of resistance.

Max Keiser

I am very intrigued by Bitcoin. It has all the signs. Paradigm shift, hackers love it, yet it’s derided as a toy. Just like microcomputers.

Paul Graham

With e-currency based on cryptographic proof, without the need to trust a third party middleman, money can be secure and transactions effortless.

Satoshi Nakamoto

Bitcoin may be the TCP/IP of money.

Paul Buchheit

Cryptographical solutions might with great propriety be introduced into academies as the means of giving tone to the most important of the powers of the mind.

Edgar Allan Poe

Bitcoin, and the ideas behind it, will be a disruptor to the traditional notions of currency. In the end, currency will be better for it.

Edmund C. Moy

Bitcoin is Money Over Internet Protocol.

Tony Gallippi

One must acknowledge with cryptography no amount of violence will ever solve a math problem.

Jacob Appelbaum

You can’t stop things like Bitcoin. It will be everywhere and the world will have to readjust. World governments will have to readjust

John McAfee

There are 3 eras of currency: Commodity based, politically based, and now, math based.

Chris Dixon

The governments of the world have spent trillions of dollars bailing out a decaying, dickensian, outmoded system called banking, when the solution to the future of finance is peer-to-peer. It’s going to be alternative currencies like Bitcoin and it’s not actually going to be a banking system as we had before 2008.

Patrick Young

The relative success of the Bitcoin proves that money first and foremost depends on trust. Neither gold nor bonds are needed to back up a currency.

Arnon Grunberg

Cryptocurrency Protocols Are Like Onions.

Vitalik Buterin

Right now Bitcoin feels like the Internet before the browser.

Wences Casares

A cryptanalyst is a person who doesn’t like being called a hacker.

Josh Zepps

Every informed person needs to know about Bitcoin because it might be one of the world’s most important developments.

Leon Luow

We have elected to put our money and faith in a mathematical framework that is free of politics and human error.

Tyler Winklevoss

Bitcoin is a technological tour de force.

Bill Gates

When cryptography is outlawed, only outlaws will have privacy.

John Perry Barlow

The bitcoin world is this new ecosystem where it doesn’t cost that much to start a new Bitcoin company, it doesn’t cost much to start owning Bitcoin either, and it is a much more efficient way of moving money around the world.

Tim Draper

Bitcoin is Cash with Wings.

Charlie Shrem