“It is sometimes said, common sense is very rare.”
Voltaire (1694–1778) French writer, historian, and philosopher
On dit quelquefois, le sens commun est fort rare... <br class="br"> Philosophical Dictionary ('Sens Commun') https://fr.wikisource.org/wiki/Page:Voltaire_-_Dictionnaire_philosophique_portatif,_6e_%C3%A9dition,_tome_2.djvu/209 (1767). <br class="br">Compare Juvenal, Satires, viii:73: <br class="br">Original Latin: rarus enim ferme sensus communis in illa fortuna http://www.thelatinlibrary.com/juvenal/8.shtml. <br class="br">Published translation in French (1731): Il est fort rare qu'on conserve le Sens commun dans une si haute fortune. https://books.google.com/books?id=lFBkAAAAcAAJ&pg=PA335&dq=%22Le+sens+commun%22+%22fort+rare%22&hl=en&sa=X&ved=0ahUKEwjepqeYtNfLAhUS3mMKHb30BdkQ6AEIHDAA#v=onepage&q=%22il%20est%20fort%20rare%22&f=false <br class="br">English translation: For rarely are civic sympathies [alternative translation: common sense] to be found in that rank". <br class="br">Citas, Dictionnaire philosophique (1764)