Within the U.S. the Obama presidency will be mainly measured by the success or failure of his economic policies. And here I fear the monstrous stimulus package with which this administration stumbled out of the gate will prove to be Obama's Waterloo.

Failure is simply the non-presence of success. But a fiasco is a disaster of mythic proportions.

The will to persevere is often the difference between failure and success.

Success is simply a matter of luck. Ask any failure.

There is much to be said for failure. It is much more interesting than success.

Most success springs from an obstacle or failure. I became a cartoonist largely because I failed in my goal of becoming a successful executive.

Whether in success or in failure I'm proud of every single movie I've ever directed.

Don't think of it as failure. Think of it as time-released success.

But while success and failure depend on conditions the mind neither waxes nor wanes.

I have always been pushed by the negative. The apparent failure of a play sends me back to my typewriter that very night before the reviews are out. I am more compelled to get back to work than if I had a success.