We can't solve today's problems with the mentality that created them.
If I had 20 days to solve a problem, I would take 19 days to define it
Manager solves problems, leader prevents them.
You can't solve problems with the same thinking that caused them.
You cannot solve a problem from the same consciousness that created it. You must learn to see the world anew.
You can't solve a problem on the same level you created it.