"When I left the Empire, I tried to leave behind their views on morality and certainty. The core of Imperial doctrine is certainty that what you're doing is right. Doubt is seen as disloyalty. Now I understand that you have to look at your decisions with a clear heart, and ask what more you could do-should do. For those who lead, doubt is necessary."
January 1, 1970
https://en.wikiquote.org/wiki/Star_Wars%3A_Squadrons