'But,' say the puling, pusillanimous cowards, 'we shall be subject to a long and bloody war if we declare independence.' On the contrary, I affirm it the only step that can bring the contest to a speedy and happy issue.

In this quote, Samuel Adams, a prominent figure in the American Revolution, addresses those who are fearful of the consequences of declaring independence from Britain. The term "puling, pusillanimous cowards" refers to individuals who, in Adams' view, lack the courage to stand up for the freedom of the American colonies. These individuals argue that declaring independence will lead to a long and bloody war, but Adams strongly disagrees, believing that independence is the necessary step to bring about a swift and decisive resolution.

Adams argues that instead of prolonging the conflict through hesitation or submission, declaring independence would actually hasten the end of the struggle and lead to a favorable outcome for the colonies. He sees independence not as an act that will drag on the war, but as the key to ending it quickly. By clearly severing ties with Britain, the colonies would have the freedom to organize and fight without the constraints of uncertainty and internal division.

The origin of this quote can be traced to the period leading up to the American Revolution, a time when many colonists were still unsure whether to break away from British rule. Despite the looming threat of a bloody war, Adams was a strong proponent of the colonies’ right to self-determination and freedom. His words reflect his belief that independence was not only a moral imperative but also the most effective means to end the conflict on the colonies' terms.

In essence, Adams’ quote captures his sense of urgency and his belief in the righteousness of the American cause. He encourages the colonists to have the courage to pursue independence, even if it means facing immediate hardship, because he sees it as the only way to bring a swift and successful conclusion to the war against Britain.