You've achieved success in your field when you don't know whether what you're doing is work or play.

Success is survival.

The appreciative smile, the chuckle, the soundless mirth, so important to the success of comedy, cannot be understood unless one sits among the audience and feels the warmth created by the quality of laughter that the audience takes home with it.

Your success depends mainly upon what you think of yourself and whether you believe in yourself.

The distance between insanity and genius is measured only by success.

After a lifetime of working, raising families, and contributing to the success of this nation in countless other ways, senior citizens deserve to retire with dignity.

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

To get down to the quick of it, respect motivates me - not success.

Success is sweet and sweeter if long delayed and gotten through many struggles and defeats.

I believe in luck: how else can you explain the success of those you dislike?