Books and all forms of writing are terror to those who wish to suppress the truth.

Air travel survived decades of terrorism, including attacks which resulted in the deaths of everyone on the plane. It survived 9/11. It'll survive the next successful attack. The only real worry is that we'll scare ourselves into making air travel so onerous that we won't fly anymore.

Today, few terrorist organizations still employ the 'al-Qaeda model' in which individuals travel to terrorist training camps overseas and then are deployed to the West to inflict atrocities.

Airline travel is hours of boredom interrupted by moments of stark terror.

Terror, married to technology and accommodated by progress in travel, has turned evil individuals into traveling ballistic missiles.

Right now, American law bars the admission of aliens suspected of terrorist activity - but not of terrorist sympathies.

If the terrorists have the sympathy of people, it's much harder to find them. So we need people on our side, and that leads us to be responsible leaders of the world, show some concern with the problems.

The strength of democratic societies relies on their capacity to know how to stand firm against extremism while respecting justice in the means used to fight terrorism.

When terrorists attacked the symbols of our national unity and strength, they failed to realize that they were just symbols of our strength. The real strength of our nation comes from our people - not our buildings.

When it comes to tyrants, dictators and terrorists, strength and the threat of force is the only language they understand.

There are many who lust for the simple answers of doctrine or decree. They are on the left and right. They are not confined to a single part of the society. They are terrorists of the mind.

The law is an adroit mixture of customs that are beneficial to society, and could be followed even if no law existed, and others that are of advantage to a ruling minority, but harmful to the masses of men, and can be enforced on them only by terror.

The scientific community should work as hard as possible to address major issues that affect our everyday lives such as climate change, infectious diseases and counterterrorism; in particular, 'clean energy' research deserves far higher priority. And science and technology are the prime routes to tackling these issues.

Let both sides seek to invoke the wonders of science instead of its terrors. Together let us explore the stars, conquer the deserts, eradicate disease, tap the ocean depths, and encourage the arts and commerce.

The sad fact is that the same terrorist scenarios, if they occurred in five different States, there could be five different sets of responses to the American people. We need, at a minimum, a level of coordination on communicating threats to the public.

In a sad twist of fate, the bill to reauthorize the Patriot Act was debated on the floor of the House of Representatives the same day that terrorists struck again.

I'm proud of my invention, but I'm sad that it is used by terrorists.

The closing of a door can bring blessed privacy and comfort - the opening, terror. Conversely, the closing of a door can be a sad and final thing - the opening a wonderfully joyous moment.

Terrorism can never be accepted. We must fight it together, with methods that do not compromise our respect for the rule of law and human rights, or are used as an excuse for others to do so.

We will be safer from terrorist attack only when we have earned the respect of all other nations instead of their fear, respect for our values and not merely our weapons.

The waves of religion based on terrorism in the 1990s are based on the tormented response of a mutilated Muslim society whose progressive forces have been savagely emasculated. Why on earth is the Arab world so hostile to women? Why can it not see women as a force for development?

The biggest danger of this terrorism and extremism is the tarnishing of the reputation of our beloved religion... We will not allow this to happen.

Religion often partakes of the myth of progress that shields us from the terrors of an uncertain future.

We first fought the heathens in the name of religion, then Communism, and now in the name of drugs and terrorism. Our excuses for global domination always change.