He became a professor at the University of Grenoble in 1883, but was already well known for his literary criticism, and in 1884 he resigned his position to devote his time to literature.

[1] Lemaître's sketches of modern authors show great insight and unexpected judgment as well as gaiety and originality of expression.

Lemaître's political views were defined in La Campagne Nationaliste (1902), lectures delivered in the provinces by him and by Godefroy Cavaignac.

[1] The Ligue originated in 1898 with three young academics, Louis Dausset, Gabriel Syveton and Henri Vaugeois, who wanted to show that Dreyfusism was not accepted by all at the University.

[2] Lemaître resigned from the Ligue de la Patrie Française 1904, and dedicated the rest of his life to writing.