Anyone, from the most clueless amateur to the best cryptographer, can create an algorithm that he himself can't break.

If you think technology can solve your security problems, then you don't understand the problems and you don't understand the technology.

There are two types of encryption: one that will prevent your sister from reading your diary and one that will prevent your government.

There are two kinds of cryptography in this world: cryptography that will stop your kid sister from reading your files, and cryptography that will stop major governments from reading your files.

Amateurs hack systems, professionals hack people.

More people are killed every year by pigs than by sharks, which shows you how good we are at evaluating risk.

People often represent the weakest link in the security chain and are chronically responsible for the failure of security systems.

Security is a process, not a product.

If someone steals your password, you can change it. But if someone steals your thumbprint, you can't get a new thumb. The failure modes are very different.

Don't make the mistake of thinking you're Facebook's customer, you're not - you're the product.

I am regularly asked what the average Internet user can do to ensure his security. My first answer is usually 'Nothing; you're screwed'.

Until it has scared you with its endlessness, sky is just sky.

Growth is not concerned with itself.

I envy people who could just have one drink and not go look for cocaine afterwards.

I know, by the Lord's grace, I am a small part in the cosmic play.

But I can't bear it when somebody who some man made a pass at - to call that violence seems to me absurd and insulting to women who've really met violence, who've been raped or bashed.

Patience is the key to any battle.

I'm not scared of dyin', and I don't really care if it's peace you find in dyin'. Well then let the time be near. And when I die and when I'm gone there'll be one child born and a world to carry on.

Where I come from, we're more about efficiency,' he replies. 'A knife like this'll skewer food, smear butter, and slit throats all at the same time.

There are many ways of casting molecular spells using DNA. What we really want to do in the end is learn how to program self-assembly so that we can build anything.

Nothing's better than coming away from a film when people don't even recognize you, because you've undergone a total transformation.