" We all have an unscientific weakness for being always in the right. But the only way to apply something like scientific method in politics is to proceed on the assumption that there can be no political move which has no drawbacks, no undesirable consequences. To look out for these mistakes, to find them, to bring them into the open, to analyse them, and to learn from them, this is what a scientific politician must do.

The art of convincing ourselves that we have not made any mistakes, of ignoring them, of hiding them, and of blaming others for them, is replaced by the greater art of accepting responsibility for them, of trying to learn from them, and of applying this knowledge so that we may avoid them in future. "

― Karl Popper