Max Black (February 24, 1909 – August 27, 1988) was an Azerbaijan-born British-American philosopher who was a leading figure in analytic philosophy in the years after World War II.
His translation (with Peter Geach) of Frege's published philosophical writing is a classic text.
Bertrand Russell, Ludwig Wittgenstein, G. E. Moore, and Frank P. Ramsey were all at Cambridge at that time, and their influence on Black may have been considerable.
In his "The Identity of Indiscernibles", Black presents an objection to Leibniz' Law by means of a hypothetical scenario in which he conceives two distinct spheres having exactly the same properties, thereby contradicting Leibniz' second principle in his formulation of "The Identity of Indiscernibles".
Black advised the philosophy dissertation of American novelist William H. Gass.