The argument of experience. For the past years, they had been trying to petition the government for freedom, but their petitions had been largely ignored. They haven't listened before, and they won't listen now. Experience shows that the only way for us to have freedom is if we fight for it.
The argument of opportunity. They had no better time than now to attack. Right now they had strength, but later, they may not have that strength. And later there would only be more British soldiers oppressing them and fewer weapons with which to protect themselves. Now was their opportunity to strike.
The argument of Divine Providence. God has given us the power to win, and if we follow His leading, there is no way we could lose. God has a plan for our nation and He will fight for us.
The argument of hope vs. reality. Hope makes us want to believe that things will be better and turn out well. But reality is that Britain is preparing for war. They are sending battleships and soldiers to our backyard with no provocation. Reality is that we have to defend ourselves against our aggressor.
The argument of no retreat. At this point, the war had basically begun. Henry argued that there was no retreat short of being put in bondage. That there was no retreat from this conflict.
The argument of slavery vs. freedom. If we do not fight, our liberty will be taken from us. We will be put in bondage unless we fight back now. Those are our only two options, no compromise, no middle ground. Only freedom or slavery, liberty or death.