No mistakes I can think of

Remember during a press conference the president was pressed to recall any mistakes he might have made in his first four years as president? ................

It is the highest form of self-respect to admit our errors and mistakes and make amends for them. To make a mistake is only an error in judgment, but to adhere to it when it is discovered shows infirmity of character.--Dale Turner

The man who makes no mistakes does not usually make anything.--William Connor Magee

The man who never makes a mistake always takes orders from one who does.--Anonymous