I begin to speak only when I am certain that what I shall say is not better left unsaid.
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By the same author and on kindred topics.
Live among men as if God beheld you; speak with God as if men were listening.
Seneca, 4 BC–65 AD 
The longer I know the joys of this world, the less I value them.
Unknown author 
To understand the world, one must sometimes turn away from it.
Albert Camus, 1913–1960 -
Albert Camus, 1913–1960 
Jovan Dučić, 1871–1943 -
Imagined dangers are the deepest, and imagined enemies are the most bloodthirsty.
Jovan Dučić, 1871–1943