Jean-Marie Guyau (28 October 1854 – 31 March 1888) was a French philosopher and poet.
Guyau was inspired by the philosophies of Epicurus, Epictetus, Plato, Immanuel Kant, Herbert Spencer, and Alfred Fouillée, and the poetry and literature of Pierre Corneille, Victor Hugo, and Alfred de Musset.
Charles Bernard Renouvier (French: [ʁənuvje]; 1 January 1815 – 1 September 1903) was a French philosopher. He considered himself a "Swedenborg of history" who sought to update the philosophy of Kantian liberalism and individualism for the socio-economic realities of the late nineteenth century, and influenced the sociological method of Émile Durkheim.