Once -- many, many years ago -- I thought I made a wrong decision. Of course, it turned out that I had been right all along. But I was wrong to have thought that I was wrong.
The measure of success is not whether you have a tough problem to deal with, but whether it's the same problem you had last year.
The ability to get to the verge without getting into the war is the necessary art. If you try to run away from it, if you are scared to go to the brink, you are lost.