By Pears, David F.
By Ayer, A. J.
By Strauss, Leo, Sinclair, Elsa M.
By O'Connor, D. J.
By Reid, Louis Arnaud
By S.R. Clark
By Sparkes, A.W.
By Gottfried Wilhelm Leibniz, G. H. R. Parkinson, M. Morris
By Honderich, Ted
By Kolakowski, Leszek
By Arthur Coleman Danto, Frank Kermode
By Gamble, Clive
By Sparshott, Francis Edward
By HANFLING
By Barth, E. M.
By Budd, Malcolm
By Klemke
By Passmore, John
By Woods, John
By Almond, Brenda
By Kenny, Anthony
By Fromm, Erich
By O'Hear, Professor of Philosophy Anthony
By Lindley, Richard C., etc.
By Ludwig Wittgenstein, G.E.M. Anscombe, R. Rhees, G.H. von Wright, G. E. M. Anscombe
By David Bohm
By Mendelsohn, E., Weingart, P., Whitely, R.D.
By Flew
By Campbell, Anthony K.
By Drury, S.