"Every judgement of conscience, be it right or wrong, be it about things evil in themselves or morally indifferent, is obligatory, in such wise that he who acts against his conscience always sins"

Thomas Aquinas is suggesting that any judgement made by a person's conscience is binding and must be followed. He is stating that even if the judgement is wrong, or if it has to do with something that is ethically indifferent, it is still required to follow it. Aquinas is stressing that if someone acts against their conscience, they are devoting a sin. This quote is stressing the value of following one's conscience, even if it is incorrect, as it is still binding. It is recommending that it is better to follow one's conscience, even if it is incorrect, than to act against it. This quote is stressing the importance of listening to one's conscience and following it, even if it is wrong.