“I daresay one profits more by the mistakes one makes off one's own bat than by doing the right thing on somebody's else advice.”

“One must make one's own mistakes”

“There is no such thing as making a mistake. Only one thing is compulsory, only one mistake: and that is not realizing your mistakes.”

“If I have one thing over other people in this industry, it's this: I've made more mistakes than anyone else. You're seeing people repeat the same mistakes we'd already made years ago.”

“One cannot make oneself, but one can sometimes help a little in the making of somebody else. It is well.”

“Again, he violated the one-question rule right off the bat. Obviously, you didn't listen to the will of the people.”

“There's often more than one correct thing.There's often more than one right thing.There's often more than one obvious thing.”

“If a man didn't make mistakes he'd own the world in a month.
But if he didn't profit by his mistakes he wouldn't own a blessed thing.”

“To go wrong in one's own way is better than to go right in someone else's.”

“If I listened to your advice, I'd be making your mistakes instead of my own.”