fidelity................................

4.   Do not waste what remains of your life in speculating about your neighbors, unless with a view to some mutual benefit.  To wonder what so-and-so is doing and why, or what he is saying, or thinking, or scheming - in a word, anything that distracts you from fidelity to the Ruler within you - means a loss of opportunity for some other task.  See then that the flow of your thoughts is kept free from idle or random fancies, particularly those of an inquisitive or uncharitable nature.

-Marcus Aurelius, Meditations, as excerpted from #4 in Book Three