What does the phrase ‘in good conscience’ mean?
If you say that you cannot do something ‘in good conscience’ or ‘in all conscience’, you are expressing the fact that you cannot do it because you believe it is not entirely correct. In other words: you believe it is wrong.
‘In good conscience’ English phrase examples
British politician Dominic Raab has just resigned from his position as Brexit Secretary, saying that he “cannot in good conscience support the terms proposed for our deal with the EU.”
In other words, he does not believe that Brexit is a good thing for the people of Britain.
Dominic Raab Brexit Secretary Resignation Letter in Full