It seems to be the translation of a French proverb (from an unknown original source). Unfortunately, there is no author information available that I can find... perhaps it was lost in history: just one of those things that people say, but no one remembers who said it first.
Influenced by conscience; governed by a strict regard to the dictates of conscience, or by the known or supposed rules of right and wrong; -- said of a person., Characterized by a regard to conscience; conformed to the dictates of conscience; -- said of actions.
This quote is often attributed to Mark Twain. It plays on the idea that people with clear consciences tend to forget past wrongdoings, suggesting that a bad memory is required to maintain a sense of innocence.
Your conscience should be clear because you have made your point. Don't bother yourself but also make sure what you said is important, the truth and right.
Influenced by conscience; governed by a strict regard to the dictates of conscience, or by the known or supposed rules of right and wrong; -- said of a person., Characterized by a regard to conscience; conformed to the dictates of conscience; -- said of actions.
It was Henry David Thoreau who said, "It is truly enough said that a corporation has no conscience; but a corporation of conscientious men is a corporation with a conscience. "
It was Henry David Thoreau who said, "It is truly enough said that a corporation has no conscience; but a corporation of conscientious men is a corporation with a conscience. "
Martin Luther
Thomas More, Chancellor of England
That you are not expressing yourself as you should. As a man, you should be following your conscience and not the law.
Josh Billings
Albert Einstein
Thoreau