Philarète Euphemon Chasles (6 October 1798 – 18 July 1873) was a widely-known French critic[1] and man of letters.

His father, Pierre Jacques Michel Chasles (1754–1826), was a member of the Convention, and was one of those who voted the death of Louis XVI.

He brought up his son according to the principles of Rousseau's Emile, and the boy, after a regime of outdoor life, followed by some years classical study, was apprenticed to a printer, so that he might make acquaintance with manual labor.

[2] On his release he was sent to London, where he worked for the printer Abraham John Valpy on editions of classical authors.

He contributed to the Revue des deux mondes, until he had a violent quarrel, terminating in a lawsuit, with François Buloz, who won his case.