Excerpts from closing arguments Monday in the trial of Oklahoma City bombing suspect Terry Nichols:

``There's only one question in this case. Did Terry Nichols intentionally help Timothy McVeigh bomb the federal building and kill the people inside?''_ prosecutor Beth Wilkinson, outlining the case for jurors.

``The government has skimmed over a lot of holes in the case and asked you to speculate. It's woefully lacking.'' _ defense attorney Ron Woods.

``The avalanche of evidence is a mountain of proof that Terry Nichols can't dispute.'' _ Wilkinson.

``The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.'' _ Thomas Jefferson, quoted by Terry Nichols to his boss, Tim Donohue.

``He wanted to ensure even if he died, this conspiracy could go forward.'' _ Wilkinson, explaining why Nichols left a letter to Timothy McVeigh, allegedly telling McVeigh where the bomb components were stored.

``That's their proof? You don't convict somebody on proof like that. You certainly don't execute anybody on proof like that.'' _ Defense attorney Ron Woods, on prosecution witnesses who changed their testimony about a pickup truck they saw the day the government says the bomb was built.

``You're on your own. Go for it!!.'' _ Nichols' letter to McVeigh, found by Nichols' ex-wife, Lana Padilla, in a storage locker.

``The Marine Corps builds men. The FBI builds witnesses.'' _ Defense attorney Michael Tigar, claiming the FBI persuaded Michael Fortier to implicate McVeigh and Nichols in the bombing.