Detailed Instructions: You are given a sentence in English. Your job is to translate the English sentence into Portugese.
Q: And he wanted to do this as a matter of principle.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
E queria fazer isso por uma questão de princípios.