“People will become your enemies if you become eminent too quickly in life, and you will be ineffectual. Rising slowly in the world, people will be your allies and your happiness will be assured.
In the long run, whether you are fast or slow, as long as you have people's understanding there will be no danger. It is said that fortune that is urged upon you from others is the most effective.”
Hagakure (c. 1716)
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Tsunetomo Yamamoto 65
Samurai 1659–1719Related quotes

“So long as you are secure you will count many friends; if your life becomes clouded you will be alone.”
Donec eris sospes, multos numerabis amicos:
tempora si fuerint nubila, solus eris.
I, ix, 5
Tristia (Sorrows)

1990s, Long Walk to Freedom (1995)
“The very people you trusted most could become like strangers in their longing…”
Source: The Secret of the Indian

“To know your Enemy, you must become your Enemy.”
This is sometimes attributed to Sun Tzu in combination with the above quote, as well as alone, but it too has not been sourced to any published translation of The Art of War, though it is similar in concept to his famous statement in Ch. 3 : "It is said that if you know your enemies and know yourself, you will not be imperiled in a hundred battles..."
Misattributed

George Stephanopoulos' Exclusive Interview with Sen. Hillary Clinton http://www.abcnews.go.com/ThisWeek/Story?id=4073183&page=4, December 30, 2007.
Presidential campaign (January 20, 2007 – 2008)