Sēngcàn (Seng-ts'an), quoted by Jonathan Haidt in The moral roots of liberals and conservatives, TED2008, 15:28
From Haidt's talk
If you want the truth to stand clear before you, never be 'for' or 'against.' The struggle between 'for' and 'against' is the mind's worst disease.
Image source: https://en.wikipedia.org/wiki/File:Sengcan.jpg
