"Ambition is the last refuge of failure." 
- Oscar Wilde 

The expectations of life depend upon diligence; the mechanic that would perfect his work must first sharpen his tools" 
- Confucius

"Don't lower your expectations to meet your performance. Raise your level of performance to meet your expectations. Expect the best of yourself, and then do what is necessary to make it a reality" - Ralph Marston  

“We love to expect, and when expectation is either disappointed or gratified, we want to be again expecting.”

- Samuel Johnson

“When one's expectations are reduced to zero, one really appreciates everything one does have." 
- Stephen Hawking

“The best things in life are unexpected- because there were no expectations." 
-Eli Khamarov

"Expectation is the root of all heartache." 

-William Shakespeare

"Life is like a box of chocolates, you never know what you're going to get." 

- Forest Gump