He told the police that he had thought honestly about the ethics of what he was doing.

他告诉警察他曾真诚地考虑过他所作所为依据的行为准则。

《柯林斯英汉双解大词典》

I recognize the badge of my office as a symbol of public faith, and I accept it as a public trust to be held so long as I am true to the ethics of the police service.

我视警徽为公众信仰的标志，只要我不违背警察工作的道德准则，我就要把它作为公众信任的符号而佩带。

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However, the current China's People's Police in professional ethics, discipline problems on the style, but also not be ignored.

但是，目前我国人民警察在职业道德上却明显存在不少问题。

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Harriet Harman, deputy leader of the U.K.'s opposition Labour Party, said Mr. Murdoch had "no option but to go" after "shocking evidence" of alleged bribery by the Sun, revealed this week at a public inquiry into media ethics by the police officer running the three criminal probes.

WSJ: James Murdoch Steps Down as Executive Chairman of News International

It will be led by senior judge Lord Justice Leveson and will investigate press ethics and review the first police inquiry on phone hacking, and the extent of wrongdoing in the press and the police.

BBC: Prescott slammed for 'pettiness' over phone hacking

The inquiry will investigate press ethics and and review the first police inquiry on phone hacking, and the extent of wrongdoing in the press and the police.

BBC: Phone-hacking debate