The terrorists and their supporters declared war on the United States - and war is what they got.

Wanton killing of innocent civilians is terrorism not a war against terrorism.

Operations in Iraq and Afghanistan and the war on terrorism have reduced the pace of military transformation and have revealed our lack of preparation for defensive and stability operations. This Administration has overextended our military.

Four years ago I promised to end the war in Iraq. We did. I promised to refocus on the terrorists who actually attacked us on 9/11. We have. We've blunted the Taliban's momentum in Afghanistan and in 2014 our longest war will be over. A new tower rises above the New York skyline al Qaeda is on the path to defeat and Osama bin Laden is dead.

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.

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

I knew from the beginning that privacy was going to be a huge issue especially with regard to applying Total Information Awareness in counterterrorism. Because if the technology development was successful a logical place to apply it was inside the United States.

To a considerable extent we are faced by a technology arms race with terrorists. The communications revolution has made it easier for terrorist groups to reach out to vulnerable individuals with their violent extremist ideology and propaganda. It has also facilitated fundraising recruitment and training.

Countries across the world are taking action now to help them track paedophiles and terrorists who abuse new technology to plot their horrific crimes.

This is technology that will not go away. And to risk it moving into the hands of a terrorist group like al Qaeda or to other focused enemies of the United States would have tragic consequences.

We're in a new world. We're in a world in which the possibility of terrorism married up with technology could make us very very sorry that we didn't act.

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.

I admire President Chavez for his strength to resist the United States. Instead Bush is waging a war of terrorism against the world.

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.

The weapon of the Republic is terror and virtue is its strength.

Terrorists have failed to trigger mass conflict between Muslims and non-Muslims in Europe. We should draw strength from that fact.

Guerrilla wars and even more so terrorist assaults are conducted only by forces with insufficient strength to carry out a real war.

And the truth is those who are terrorists only have to succeed once and those of us who are trying to build an inclusive society have to succeed every time.

In a repressive society a writer can be deeply influential but in a society that's filled with glut and repetition and endless consumption the act of terror may be the only meaningful act.

I think the debate in our society now is that people have to agree on zero-tolerance to terrorism.

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.

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.

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.