After putting this one together, I came across a second quote that I think makes us to think even more so on the subject ...
"As we must account for every idle word,
so must we account for ever idle silence."
And then I found this from Victor Hugo:
"A man is not idle because he is absorbed in thought.
There is a visible labor and there is an invisible labor."
Reminds me of my worship leading days and how I would get so frustrated with folks who did not have an outward expression of the musical portion of the worship service - but yet I knew some of those I loved most dearly ... walked very closely with God in an intimate and covert relationship - demonstrating their love and commitment in many other ways instead of exuberant singing.
So how 'bout another quote: "Judge not, lest ye be judged" (Matthew 7:1)