“The illegal we do immediately. The unconstitutional takes a little longer.”
As quoted in The Washington Post (23 December 1973); he later joked further on this remark, on 10 March 1975 saying to Turkish Foreign Minister Melih Esenbel in Ankara, Turkey:
Before the Freedom of Information Act, I used to say at meetings "The illegal we do immediately. The unconstitutional takes a little longer." … But since the Freedom of Information Act, I'm afraid to say things like that.
As quoted in "Sunshine Week Document Friday! Kissinger Says, “The illegal we do immediately; the unconstitutional takes a little longer. But since the FOIA, I’m afraid to say things like that.” in Unredacted : The National Security Archive, unedited and uncensored http://nsarchive.wordpress.com/2012/03/15/document-friday-kissinger-says-the-illegal-we-do-immediately-the-unconstitutional-takes-a-little-longer-but-since-the-foia-im-afraid-to-say-things-like-that/
Included in Cable P860114-1573_MC_b http://wikileaks.org/plusd/cables/P860114-1573_MC_b.html#efmCS3CUB Wikileaks
1970s
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Henry Kissinger 50
United States Secretary of State 1923–2023Related quotes
in a December 6, 2006 interview with the Australian Broadcasting Corporation

Interview by Joseph Murtagh, June 28, 2007 http://www.muckrakerreport.com/id447.html
2000s, 2006-2009

“The Brilliant Epoch” http://www.schulzian.net/translation/sanatorium/epoch1.htm
His father, Time

Sometimes quoted in grammatically corrected form as "They always become a little different immediately after they are expressed..." but the apparent editing error here is retained in the published versions of this translation.
Siddhartha (1922)
Context: Words do not express thoughts very well. They always become a little different immediately after they are expressed, a little distorted, a little foolish. And yet it also pleases me and seems right that what is of value and wisdom to one man seems nonsense to another.

Steve King: Remembering Iowa’s Sarah Root, 21-Year-Old Killed By Illegal Alien http://www.breitbart.com/big-government/2016/05/24/exclusive-steve-king-remembering-iowas-sarah-root-21-year-old-killed-illegal-alien/ (May 24, 2016)

Jim Ziegler, Alabama state auditor, in [2017-11-09, Philip Wegmann, Alabama state auditor defends Roy Moore against sexual allegations, invokes Mary and Joseph, The Washington Examiner, http://www.washingtonexaminer.com/alabama-state-auditor-defends-roy-moore-against-sexual-allegations-invokes-mary-and-joseph/article/2640217]

New York Times interview (1911)
Context: In this country all a man need to do is to attain a little eminence and immediately he begins to talk. … But the American people are willing to listen to any one who has attained prominence. The main fact is that we've heard a man's name a great many times; that makes us ready to accept whatever he says.

Presidential campaign (April 12, 2015 – 2016), First presidential debate (September 26, 2016)