“It is convenient that there be gods, and, as it is convenient, let us believe that there are.”

The Complete Neurotic's Notebook (1981), Marriage

Douter de tout ou tout croire, ce sont deux solutions également commodes, qui l'une et l'autre nous dispensent de réfléchir.
Preface, Dover abridged edition (1952), p. xxii
Science and Hypothesis (1901)

Thomas Tredgold (1828), used in the Royal Charter of the Institution of Civil Engineers (ICE) published in: The Times, London, article CS102127326, 30 June 1828.

Song lyrics, Knocked Out Loaded (1986), Brownsville Girl (with Sam Shepard)

Book XXXIV, sec. 3
History of Rome

The Pirates of Penzance (1879)

Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book I, Chapter III, Sec. 2
Context: All... must be built with due reference to durability, convenience, and beauty. Durability will be assured when foundations are carried down to the solid ground and materials wisely and liberally selected; convenience, when the arrangement of the apartments is faultless and presents no hindrance to use, and when each class of building is assigned to its suitable and appropriate exposure; and beauty, when the appearance of the work is pleasing and in good taste, and when its members are in due proportion according to correct principles of symmetry.

Source: Dracula

Source: The Sunflower