The great source of pleasure is variety. Uniformity must tire at last, though it be uniformity of excellence. We love to expect; and when expectation is disappointed or gratified, we want to be again expecting.

Johnson, Samuel and James Boswell. "The Journal of a Tour to the Hebrides." A Journey to the Western Islands of Scotland and the Journal of a Tour to the Hebrides, edited by Jack Lynch and Celia Barnes. Oxford University Press, 2021.

The Constitution of the United States. The Constitution of the United States and The Declaration of Independence. Written by Delegates of The Constitutional Convention. Racehorse, 2016, amend. 2.

Pope, Alexander. "An Essay on Criticism." Alexander Pope: The Major Works, edited by Pat Rogers. Oxford University Press, 2009, pt. 2, I. 215-218.