No one ever did anything worth doing unless he was prepared to go on with it long after it became something of a bore.
— Douglas Steere
There are lots of people with extraordinary natural talent who never make it. There are also lots of people with very average abilities who do. The difference is that the people in the second group have the discipline to persevere and not back down when things get difficult.
— Mary Lou Retton
It’s not that I’m so smart, it’s just that I stay with problems longer.
— Albert Einstein
The first requisite for success is the ability to apply your physical and mental energies to one problem, incessantly, without growing weary.
— Thomas Edison
Somehow over the years folks have gotten the impression that Wal-Mart was just this great idea that turned into an over-night success. But our first Wal-Mart store was totally an outgrowth of everything we’d been doing since 1945 – another case of me being unable to leave well enough alone, another experiment. And like most over-night successes, it was about twenty years in the making.
— Sam Walton