“Think it over, think it under.”
Variant: Think, think, think.
Source: Winnie-the-Pooh
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A.A. Milne 169
British author 1882–1956Related quotes

Broadcast on Jack Benny radio program, 28 March 1948. Sourced from audio recording.
The Jack Benny Program (Radio: 1932-1955)
Variant: Jack Benny: I'm thinking I'm thinking!

"Fool (If You Think It's Over)"
Song lyrics, Whatever Happened to Benny Santini? (1978)
“Organizations are presumed to talk to themselves over and over to find out what they are thinking.”
Source: 1980s-1990s, Sensemaking in Organizations, 1995, p. 133-134, as cited in: Magala (1997, p. 321)

“It is, in fact, far easier to act under conditions of tyranny than it is to think.”
The Human Condition (1958).

“I think we agree, the past is over.”
In March 2000 http://www.snopes.com/politics/bush/piehigher.asp.
2000s, 2000

Loesch: More Outrage over Lion's Death Than Planned Parenthood Videos http://insider.foxnews.com/2015/07/30/dana-loesch-more-outrage-over-cecil-lion-planned-parenthood-videos (July 30, 2015)

“I don't think it's worth washing hogs over.”
[199710060253.TAA09723@wall.org, 1997]
Usenet postings, 1997