"Success is going from failure to failure with great enthusiasm."
 - Sir Winston Churchill

"I don't know the key to success, but the key to failure is to
 try to please everyone." - Bill Cosby

"No enterprise is more likely to succeed than one concealed from
 the enemy until it is ripe for execution." - Niccolo Machiavelli

"There are no secrets to success: Don't waste time looking for
 them.  Success is the result of perfection, hard work, learning
 from failure, loyalty to those for whom you work, and persistence."
 - Colin Powell

"Success is just having the fortitude to keep going."
 - Ed Hoffman, director of NASA's Academy of Program and Project Leadership

"A number of studies show that people are less likely to make optimal
 decisions after prolonged periods of success.  NASA, Enron, Lucent,
 WorldCom—all had reached the mountaintop before they ran into trouble.
 Someone should have told them that most mountaineering accidents happen
 on the way down." - Ram Charan, Jerry Useem, Fortune Magazine (2002)

"To be successful, keep looking tanned, live in an elegant building
 (even if you're in the cellar), be seen in smart restaurants (even if
 you only nurse one drink), and if you borrow, borrow big."
 - Aristotle Onassis

"There are two rules for success in life.
 Rule 1: Don't tell people everything you know."
 - Anonymous