“One is faced with a dilemma: If one places total trust in all other users, one is vulnerable to the antisocial behavior of any malicious user—consider the case of viruses. But if one tries to be totally reclusive and isolated, one is not only bored, but one's information universe will cease to grow and be enhanced by interaction with others. The result is that most of us operate in a complicated trade-off zone with various arrangements of trust and security mechanisms.”
Source: On Building Systems That Will Fail (1991), p. 79
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Fernando J. Corbató 11
American computer scientist 1926–2019Related quotes

Letter to Edward T. Hall, 1971, Letters of Marshall McLuhan, p. 397
1970s
1950s, "General systems theory," 1956

The Guardian 5 July 2010. http://www.guardian.co.uk/commentisfree/2010/jul/05/iphone-4-apple-new
Guardian columns
So many leaders and their staff have shown in the recent global financial crisis a lack of trust and integrity amongst themselves and with their clients and other stakeholders.
Source: Your Job-Hunt Ltd – Advice from an Award-Winning Asian Headhunter (2003), Successful Recruitment in a Week (2012) https://books.google.ae/books?id=p24GkAsgjGEC&printsec=frontcover&dq=nigel+cumberland&hl=en&sa=X&ved=0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIGjAA#v=onepage&q=nigel%20cumberland&f=false, Managing Teams in a Week (2013) https://books.google.ae/books?id=qZjO9_ov74EC&printsec=frontcover&dq=nigel+cumberland&hl=en&sa=X&ved=0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIIDAB#v=onepage&q=nigel%20cumberland&f=false, Secrets of Success at Work – 50 techniques to excel (2014) https://books.google.ae/books?id=4S7vAgAAQBAJ&printsec=frontcover&dq=nigel+cumberland&hl=en&sa=X&ved=0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIJjAC#v=onepage&q=nigel%20cumberland&f=false, p.19

"My Speech to the Graduates"
Side Effects (1980)
Variant: Mankind is facing a crossroad - one road leads to despair and utter hopelessness and the other to total extinction - I sincerely hope you graduates choose the right road
Source: Mere Anarchy

“But ne’ertheless reflect, the little mouse, how sage a brute it is! Who never trusts its safety to one hole : for when it finds one entrance is block’d up, it has secure some other outlet.”
Cogito, mus pusillus quam sit sapiens bestia, aetatem qui uni cubili nunquam committit suam : quia si unum ostium obsideatur, aliud perfugium gerit.
Truculentus, Act IV, sc. iv, line 15.
Variant translation: Consider the little mouse, how sagacious an animal it is which never entrusts its life to one hole only. (translator unknown)
Truculentus

“To put one’s trust in God is only a longer way of saying that one will chance it.”
Providence and Improvidence, ii
The Note-Books of Samuel Butler (1912), Part XIV - Higgledy-Piggledy