by John Stuart Mill
by George Boole
by John Stuart Mill
by Arthur Schopenhauer
by Georg Wilhelm Friedrich Hegel
by Carveth Read
by William Walker Atkinson
by Georg Wilhelm Friedrich Hegel
by John Dewey
by John Dewey
by William Minto
by Joseph Dietzgen
by St. George William Joseph Stock
by George Jacob Holyoake
by Georg Wilhelm Friedrich Hegel
by John Neville Keynes
by John Stuart Mill
by John Stuart Mill
by Benedetto Croce
by George Hastings McNair
by Delton Thomas Howard
by Andres Piquer
by Goswin Uphues
by Augustus De Morgan
by William Wallace
by Bernard Bosanquet
by D. B. McLachlan