The best current evidence is that media are mere vehicles that deliver instruction but do not influence student achievement any more than the truck that delivers groceries causes change in our nutrition.

Yesterday is rarely too early but tomorrow is frequently too late.

I think we have to be very careful. If we do go back in, we need to understand why and what the probability of success is and exactly what we're going to do and what the limits are.

We can literally unplug a country from the Internet. We ought to think about unplugging them.

The only way to stop it [terrorism] is to work with the leaders of Islamic nations to insure that tolerance of other religions is taught again, that their people believe they have fair opportunities to participate in government and the economy, and that the social and cultural conditions that breed hatred are bred out.

If you spend more on coffee than on IT security, you will be hacked. What's more, you deserve to be hacked.

Democracies don't prepare well for things that have never happened before.