I am fond of DT's revision to #6 from P&T, but if I could improve it to be less specific, I would say:
"Thou shalt value thy own opinions up to any degree, though understand that thy opinion bears no weight outside of oneself. It then becomes vulnerable."
"Thou shalt value thy own opinions up to any degree, though understand that thy opinion bears no weight outside of oneself. It then becomes vulnerable."
