“If you are brave too often, people will come to expect it of you.”
The Complete Neurotic's Notebook (1981), Unclassified
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Mignon McLaughlin 278
American journalist 1913–1983Related quotes

“They’re just ordinary people,” Nancy said. “You can’t expect too much of them.”
Source: All Flesh is Grass (1965), Chapter 17 (p. 179)

Compare sourced quote set forth above: "The English follow the principle that when one lies, it should be a big lie, and one should stick to it."
Attributed to Goebbels in Publications Relating to Various Aspects of Communism http://books.google.com/books?id=iLAnAQAAMAAJ&q=%22If+you+repeat+a+lie+often+enough,+people+will+believe+it.%22&dq=%22If+you+repeat+a+lie+often+enough,+people+will+believe+it.%22&hl=en&sa=X&ei=U4gPUvObG4qMyQHlhYAw&ved=0CGQQ6AEwCQ (1946), by United States Congress, House Committee on Un-American Activities. No reliable source has been located, and this is probably simply a further variation of the Big Lie idea.
Variants:
If you repeat a lie often enough, people will believe it.
If you repeat a lie often enough, it becomes the truth.
If you tell a lie big enough and keep repeating it, people will eventually come to believe it.
If you repeat a lie long enough, it becomes truth.
If you repeat a lie many times, people are bound to start believing it.
Attributed in The Sack of Rome (2006) by Alexander Stille, p. 14, and also attributed in A World Without Walls: Freedom, Development, Free Trade and Global Governance (2003) by Mike Moore, p. 63.
Misattributed

Aequanimitas (1889)
Context: Let me recall to your minds an incident related of that best of men and wisest of rulers, Antoninus Pius, who, as he lay dying, in his home at Loriam in Etruria, summed up the philosophy of life in the watchword, Aequanimitas. … Natural temperament has much to do with its development, but a clear knowledge of our relation to our fellow-creatures and to the work of life is also indispensable. One of the first essentials in securing a good-natured equanimity is not to expect too much of the people amongst whom you dwell.

“If you have come with high expectations of anything, you have come to the wrong place.”
A lieutenant of Tiresias, Ch. 7
Space Chantey (1968)

First Elegy (as translated by Stephen Mitchell)
Source: Duino Elegies (1922)
Context: Yes—the springtimes needed you. Often a star
was waiting for you to notice it. A wave rolled toward you
out of the distant past, or as you walked
under an open window, a violin
yielded itself to your hearing. All this was mission.
But could you accomplish it? Weren't you always
distracted by expectation, as if every event
announced a beloved? (Where can you find a place
to keep her, with all the huge strange thoughts inside you
going and coming and often staying all night.)