Steven Hatfill quotes:

The next day I was put on paid leave from my new job at Louisiana State University. This is very painful to me, though once again I understand the circumstances in which my employers find themselves in light of these actions taken against me.

All Americans value the freedom of speech and the freedom of the press, and I believe this is essential for our continued way of life. But with this freedom comes responsibility.

I have had nothing to do in any way, shape or form with the mailing of these anthrax letters, and it is extremely wrong for anyone to contend or suggest that I have.

All Americans value the freedom of speech and the freedom of the press, and I believe this is essential for our continued way of life. But with this freedom comes responsibility. That responsibility has been abdicated here by some in the media and some in the government.

And indeed, last week, the FBI executed a search warrant on my residence. This happened one day after my attorneys had left a message on the lead FBI investigator's voice mail confirming my continued readiness to answer questions and otherwise cooperate.

Is the Justice Department incapable of regulating itself? Without strong regulation, the privileges we give them to investigate us, to conduct their normal anti-crime things, can spiral out of control.

But I am just as appalled that my experience, knowledge, dedication and service relative to defending the United States against biological warfare has been turned against me in connection with the search for the anthrax killer.

I learned a couple things. The government can do to you whatever they want. They can break the laws, federal laws, as they see fit... You can't turn laws on and off as you deem fit.

Later, I went down to the Washington field office and an onsite polygraph was administered.

After eight months of one of the most intensive public and private investigations in American history, no one - no one - has come up with a shred of evidence that I had anything to do with the anthrax letters. I have never worked with anthrax. I know nothing about this matter.

I'm a medical doctor and a biomedical scientist.

I especially object to having my character assassinated by reference to events from my past which bear absolutely no relationship to the question of who the anthrax killer is.

I don't know Dr. Rosenberg. I have never met her, I have never spoken or corresponded with this woman. And to my knowledge, she is ignorant of my work and background except in the very broadest of terms.

As a scientist in the field of biological warfare defense, I have never had any reservations whatsoever about helping the anthrax investigation in any way that I could.

I am extremely proud of my service with the government and my efforts to help safeguard public health and protect our country against the scourge of offensive biological warfare.

I am a loyal American, and I love my country.

Later, I went down to the Washington field office and an onsite polygraph was administered. After reviewing the polygraph charts in private, the polygraph examiner told me that I had passed and that he believed I had nothing to do with the anthrax letters.

In due course, following an additional debriefing, the FBI confirmed to me and to my former counsel, Tom Carter, that I was not a suspect in this case. I assumed that my involvement in the investigation was over.

I was devastated by the loss of my job in March, although I can understand why it occurred.

Anthrax is a deadly inhalational disease.

I want to look my fellow Americans directly in the eye and declare to them, 'I am not the anthrax killer.' I know nothing about the anthrax attacks. I had absolutely nothing to do with this terrible crime.

After reviewing the polygraph charts in private, the polygraph examiner told me that I had passed and that he believed I had nothing to do with the anthrax letters.

It's true that my research expertise is in biology: for example, the Ebola virus, the Marburg virus, and monkey pox, and not bacteriology as in the case of the anthrax organism. It's also true that I have never, ever worked with anthrax in my life. It's a separate field from the research I was performing at Fort Detrick.

In fact, I had previously helped train one of the FBI agents who searched my apartment.

I acknowledge the right of the authorities and the press to satisfy themselves as to whether I am the anthrax mailer. This does not, however, give them the right to smear me and gratuitously make a wasteland of my life in the process. I will not be railroaded.

I was a guy who trusted the government. Now, I don't trust a damn thing they do.

Every human being has to feel a part of a tribe. It's programmed into us. And you have to feel that you're contributing to something.

So I was surprised at the notion that I might have brought anthrax to my home, and would have been even amused if it was not for the fact that this matter is so grave and serious.