In Search of Lost Time [volumes 1 to 7]

by Marcel Proust

A powerful idea communicates some of its strength to him who challenges it. Being itself a part of the riches of the universal Mind, it makes its way into, grafts itself upon the mind of him whom it is employed to refute, slips in among the ideas already there, with the help of which, gaining a little ground, he completes and corrects it; so that the final utterance is always to some extent the work of both parties to a discussion.