“I don’t expect perfection, I expect excellence.” I expect 100 percent effort in all you do.”
When to Rob a Bank: ...And 131 More Warped Suggestions and Well-Intended Rants
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Steven D. Levitt 9
American economist 1967Related quotes

“Society expects trans women to be perfect the way they expect all women to be perfect.”
2017

“I want people to be blown away when I do what they don’t expect.”

In this famous statement, Lincoln is quoting the response of Jesus Christ to those who accused him of being able to cast out devils because he was empowered by the Prince of devils, recorded in Matthew 12:25: "And Jesus knew their thoughts, and said unto them, Every kingdom divided against itself is brought to desolation; and every city or house divided against itself shall not stand".
1850s, The House Divided speech (1858)

“I never expect a perfect work from an imperfect man.”

… The twenty-five percent is for error.
Pauling's reply to an audience question about his ethical system, following his lecture circa 1961 at Monterey Peninsula College, in Monterey, California.
1990s

“I had no expectations. I thought, “If I don’t make it, it’s my own fault.””
Source: On choosing to immigrate to the United States in “Anchee Min: 'If I had stayed in China, I would be dead'” https://www.telegraph.co.uk/culture/10116718/Anchee-Min-If-I-had-stayed-in-China-I-would-be-dead.html in The Telegraph (2013 Jul 4)
Context: In China I had to suffer and labour for the Communist Party – here I was given the opportunity to suffer and labour for myself and to build my own life. I chose to look at the glass half full – I think that’s a very immigrant attitude.

Letter to Wilhelm Fliess (25 March 1898)
1890s