Tusculanae Disputationes, 1, 2, 5.

[1808].

Geometria,

Through which a man hath the sleight

Of length, and brede, of depth, of height.

—Gower, John.

Confessio Amantis, Bk. 7.

[1809]. Geometrical truths are in a way asymptotes to physical truths, that is to say, the latter approach the former indefinitely near without ever reaching them exactly.—D’Alembert.

Quoted in Rebière: Mathématiques et Mathématiciens (Paris, 1898), p. 10.

[1810]. Geometry exhibits the most perfect example of logical stratagem.—Buckle, H. T.