““We don’t develop and acquire courage by taking the smoothest path each time. We develop it by facing misfortune and perilous conditions.””
1989
Related quotes

Source: The Manifesto of the Communist Party (1848), Section 2, paragraph 72 (last paragraph).

Quote of Russolo in: Le Futurisme: Création et avant-garde, Giovanni Lista, 2001; as cited in Futurism, ed. By Didier Ottinger; Centre Pompidou / 5 Continents Editions, Milan, 2008, p. 47.
undated quotes
Variant: We know, and we must never forget, that every path leads somewhere. The path of segregation leads to lynching. The path of anti-Semitism leads to Auschwitz. The path of cults leads to Jonestown. We ignore this fact at our peril. As quoted in "How Many Jonestowns Will It Take?" in The Cult Observer (1992), p. 123
Ref: en.wikiquote.org - Maurice Davis / Quotes / Address on the Cult Phenomenon in the United States (1979)

Variant: We all take different paths in life, but no matter where we go, we take a little of each other everyhwere.

Yu Zhengsheng (2014) cited in " Top political advisor vows understanding on Taiwan http://english.cntv.cn/2014/06/15/ARTI1402811332174644.shtml" on English CCTV.com, 15 June 2014.