--- Lord Chesterfield, implicitly criticizing multi-tasking, in a letter to his son in the 1740s, quoted by Christine Rosen in "The Myth of Multitasking," The New Atlantis, Number 20, Spring 2008, pp. 105-110.
In full: "There is time enough for everything in the course of the day, if you do but one thing at once, but there is not time enough in the year, if you will do two things at a time"
