The leading rule for a lawyer, as for the man of any other calling, is diligence.  Leave nothing for to-morrow which can be done to-day.  Never let your correspondence fall behind.  Whatever piece of business you have in hand, before stopping do all the labor pertaining to it which can then be done.

Abraham Lincoln (1809-1865), Notes for a law lecture

This echo comes via the very fine Cultural Offering blog.