The Open Society and Its Enemies (Princeton Classics)

by Karl Popper

But a philosophy which makes man the centre of its interest began only with Protagoras. And the belief that there is nothing more important in our life than other individual men, the appeal to men to respect one another and themselves, appears to be due to Socrates. Burnet has stressed44 that it was Socrates who created the conception of the soul, a conception which had such an immense influence upon our civilization. I believe that there is much in this view, although I feel that its formulation may be misleading, especially the use of the term ‘soul’; for Socrates seems to have kept away from metaphysical theories as much as he could. His appeal was a moral appeal, and his theory of individuality (or of the ‘soul’, if this word is preferred) is, I think, a moral and not a metaphysical doctrine.