immortality belongs only to the intellect, which is impersonal, and identical in different intellectual beings.
 Bertrand Russell, A History of Western Philosophy (1945). copy citation

Context

“During these three years he was in Paris, where the Dominicans, on account of their Aristotelianism, were in trouble with the university authorities, and were suspected of heretical sympathy with the Averroists, who had a powerful party in the university. The Averroists held, on the basis of their interpretation of Aristotle, that the soul, in so far as it is individual, is not immortal; immortality belongs only to the intellect, which is impersonal, and identical in different intellectual beings. When it was forcibly brought to their notice that this doctrine is contrary to the Catholic faith, they took refuge in the subterfuge of “double truth”: one sort, based on reason, in philosophy, and another, based on revelation, in theology.” source