Deng Xiaoping citations

Actually coined by Mao Zedong, popularized by Deng Xiaoping
Misattributed or apocryphal

"Nanxun" (Southern Tour) of 1992. Quoted in The Economist http://www.economist.com/node/639652 (31 May 2001). A summarization of several quotations from Deng Xiaoping, known in Chinese as, "让一部分人先富起来", News of the Communist Party of China http://cpc.people.com.cn/GB/34136/2569304.html World Development Report 2009 https://books.google.com/books?id=ZkDE5CxAqHcC&pg=PA73&lpg=PA73&dq=%22some+areas+must+get+rich+before+others%22&source=bl&ots=ezli3nfD8W&sig=ACfU3U2wto-q9C3waDTgnGgB2xLgodbruA&hl=en&sa=X The Nanxun Legacy and China's Development in the Post-Deng Era https://books.google.com/books?id=jDJqDQAAQBAJ&pg=PA202&dq=%22to+get+rich+first%22&hl=en&sa=X.
Misattributed or apocryphal

Deng is commonly quoted with this phrase in western media but there is no proof that he actually said it
However, this phrase in Chinese is more accurately translated as ""wealth is glorious,"" where wealth can have a very general meaning, including knowledge, personal relationships, family: anything of value. Understood this way, the quote is not as directly controversial as a ideological/political statement, and so it is not hard to believe that he really did say this.

Source: http://pqasb.pqarchiver.com/latimes/access/689588251.html?dids=689588251:689588251&FMT=ABS
Misattributed or apocryphal

As quoted in Daily report: People's Republic of China, Editions 240-249 (1993), p. 30
Interview, Time, 4 November 1985.
Variante: There are no fundamental contradictions between a socialist system and a market economy.

As quoted in Forbes, Vol. 176, Editions 7-13 (2005), p. 79

摸着石头过河 (mō zhe shítou guòhé)
Meaning: proceed gradually, by experimentation.
Traditional saying, first used in Chinese Communist context by Chen Yun, 1980 December 16, then popularized by Deng 1984 October. Frequently misattributed to Deng.
Misattributed or apocryphal
Source: Henry He, Dictionary of the Political Thought of the People's Republic of China, Routledge, 2016, ISBN 978-1-31550044-7, p. 287 https://books.google.com/books?id=XSi3DAAAQBAJ&lpg=PA287&dq=%22cross%20the%20river%20by%20feeling%20the%20stones%22&pg=PA287#v=onepage
Source: Evan Osnos, Boom Doctor https://www.newyorker.com/magazine/2010/10/11/boom-doctor, New Yorker, October 11, 2010:
The strategy, as Chen Yun put it, was “crossing the river by feeling for the stones.” (Deng, inevitably, received credit for the expression.)
Source: Chinese land reform: A world to turn upside down https://www.economist.com/briefing/2013/10/31/a-world-to-turn-upside-down, The Economist, 2013 October 31
Liu Hongzhi, who oversees the scheme, quotes a famous phrase often attributed to Deng, though in fact coined by a colleague: “We are crossing the river by feeling the stones.”

Actually from the Han Shu 《漢書·河間獻王劉德傳》, not coined by Mao Zedong nor by Deng Xiaoping, popularized by various people before them.
Misattributed or apocryphal

When asked about China's political stability by a group of American professors in 1983, as quoted in The Pacific Rim and the Western World: Strategic, Economic, and Cultural Perspectives (1987), p. 105

Quoted in Hung Li China's Political Situation and the Power Struggle in Peking (1977), p. 107
According to Chambers Dictionary of Quotations (1993), p. 315, this quote is from a speech at the Communist Youth League conference in July 1962.

» Great Firewall of China Torfox, cs.stanford.edu, 2018-05-02 https://cs.stanford.edu/people/eroberts/cs201/projects/2010-11/FreedomOfInformationChina/category/great-firewall-of-china/index.html,

Speech at the Opening Ceremony of the National Conference on Science (March 1978) (exerpts)

Speech at the Opening Ceremony of the National Conference on Science (March 1978) (exerpts)