by C.-F. (Constantin-François) Volney
by J. B. (John Bagnell) Bury
by Brooks Adams
by Baron John Emerich Edward Dalberg Acton Acton
by H. G. (Herbert George) Wells
by William Playfair
by G. E. (George Everett) Partridge
by Friedrich von Schlegel
by Antonio Labriola
by Theodore Roosevelt
by Giambattista Vico
by C.-F. (Constantin-François) Volney
by C.-F. (Constantin-François) Volney
by Gabriel Bonnot de Mably
by Charles Victor Langlois, Charles Seignobos
by Gustave Le Bon
by Emile Gebhart
by Friedrich von Schlegel
by Gabriel Bonnot de Mably
by Gabriel Bonnot de Mably
by Gabriel Bonnot de Mably
by Frederick James Eugene Woodbridge