Izdavač: Farrar, Straus and Company, New York 1964;

Izdavač: Oxford University Press, London 1968;

Izdavač: Cambridge University Press, Cambrige 1969;

Izdavač: Macmillan Press Ltd, London, Basingstoke 1971;

Izdavač: Anchor Books, New York 1966;

Izdavač: The University of Massachusetts Press, Amherst 1978;

Izdavač: The Free Press, Collier Macmillan Publishers, New York, London 1966;

Izdavač: Cambridge University Press, Cambrige 1973;

Izdavač: University of California Press, Berkley, Los Angeles 1955;

Izdavač: Clarendon Press, Oxford 1977;

Izdavač: Cambridge University Press, Cambrige 1957;

Izdavač: George Allen and Unwin Ltd, Humanities Press Inc, London-New York 1964; Muirhead Library of Philosophy