Meaning of “Concentration is an art of slow acquisition”

The Lost Prince; Project Gutenberg #384. 'The game' is the boys’ repeated training exercise in memory, recognition and recall.

The Way to Wealth; a Poor Richard maxim on delay and useful employment of time.

The Life of Reason; the line appears in Santayana’s analysis of ideas, activity, and sustained direction.

The Majesty of Calmness, essay II, “Hurry, the Scourge of America,” Project Gutenberg #6911. Jordan contrasts purposeful haste with confused hurry and says that slow, careful foundation work can be quickest in the end. It is period moral rhetoric about overwork, pace and preparation rather than a universal productivity finding.

The Master-Word in Medicine, address delivered October 1, 1903 at the opening of the new buildings of the University of Toronto Medical Faculty; reviewed against the represented 1903 John Murphy pamphlet, Internet Archive identifier b28060805. ‘The master-word is Work’ is Osler’s organizing refrain and is followed by his appeal to write the word on the heart and forehead. This remains historical professional rhetoric rather than an endorsement of unsafe working hours or workaholism.

Character Building, “Some Great Little Things,” Project Gutenberg #60484. Near the close of the address, Washington urges regular times for study, recreation, sleep, reading and reflection, treating regularity as part of everyday self-discipline.