“The use of science in the practice of virtue, is considerable: the man who knows the beauty of virtue will follow it, however possible. Knowing the evil of wrong, he will avoid it, however possible. He listens to worthy praise, and keeps his distance from unworthy praise. From this is derived that science has a part in every virtue, and that ignorance has one in every vice. Man who is illiterate and who still practices virtue must be extremely pure, a virtuous being. This is the state of Prophets (PBUH) because God had conveyed goodness to them without they acquiring it from men.”

J. J. Sylvester. "A Probationary Lecture on Geometry", Collected Mathematical Papers, Vol. 2 (1908), p. 9 https://babel.hathitrust.org/cgi/pt?id=miun.aas8085.0002.001;view=1up;seq=25

Epode, lines 1-4
The Works of Ben Jonson, First Folio (1616), The Forest

Source: The Boy Crisis (2018), pp. 89

Source: Translations, The Aeneid of Virgil (1866), Book X, p. 367

Celui qui étudie un texte ou des microbes ou les étoiles doit se défaire de sa subjectivité... c'est là un idéal qu'il faut essayer de rejoindre par une certaine pratique. Disons que l'objectivité est une vertu, d'ailleurs très diffice à pratiquer.
La Philosophie comme manière de vivre (2001)

Vice and Virtue, ii
The Note-Books of Samuel Butler (1912), Part II - Elementary Morality

Source: The Practice of the Presence of God

Leon MacLaren, The Machinery of Government, 1998

Rameau's Nephew (1762)
Context: People praise virtue, but they hate it, they run away from it. It freezes you to death, and in this world you've got to keep your feet warm.