Definition of "overquietness"

To strenuous minds there is an inquietude in overquietness, and no laboriousness in labour; and to tread a mile after the slow pace of a snail […] were a most tiring pennance, and worse than a race of some furlongs at the Olympicks.

1716, Thomas Browne, edited by Samuel Johnson, Christian Morals‎, 2nd edition, London: J. Payne, published 1756, pages 49–50