Source: Scouting for Boys: A Handbook for Instruction in Good Citizenship
“When you get in situations where you cannot afford to make a mistake, it's very hard to do the right thing. So if you're trying to do the right thing, the right thing might be to eliminate the cost of making a mistake rather than try to guess what's right.”
A Conversation with Ward Cunningham (2003), Collective Ownership of Code and Text
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Ward Cunningham 69
American computer programmer who developed the first wiki 1949Related quotes
                                        
                                        We The Living (1936) 
Source: We The Living Part One Chapter 6
                                    
“People who try hard to do the right thing always seem mad.”
Source: The Stand
“I try to do the right thing, Holden. But there are times when it’s not obvious what that is.”
                                        
                                        “I agree with you,” Holden said. “Right up to the part where you tell me this is one of those times.” 
Source: Nemesis Games (2015), Chapter 28 (p. 298)
                                    
“People will always try to stop you doing the right thing if it is unconventional.”
As quoted in "My $650,100 Lunch with Warren Buffett" by Guy Spier, in TIME (30 June 2008) http://content.time.com/time/business/article/0,8599,1819293,00.html
Quoting her mother's statement after her son's birth, in I Know Why the Caged Bird Sings (1969)
                                        
                                        Reported in Lucian McCarty, "Sen. Roy McDonald Comes to his decision on the same-sex marriage measure after careful consideration, remains firm in his support despite criticism", The Saratogian (June 2011). 
This was on Senator McDonald's change of vote from a "no" in 2009 to a "yes" in 2011.