סייג לחכמה, שתיקה

Communication for its own sake is, of course, vanity.

Nothing of ultimate consequence is communicable, least of all the meaning of life, which is at best understood.

More precisely, one experiences the meaning of life insofar as he acts well.

Στη στιγμή της δράσης θυμηθείτε την αξία της σιωπής και της τάξης

Thucydides was close to the mark, but talk is cheap, plans are trifling, and action is inevitable.  This, then, is the mark:

סייג לחכמה, שתיקה