Two books have made me change my opinion radically at different times in my life.

Robert Havemann's 'Dialektik ohne Dogma' has made me see that socialism can be something very different from the 'Socialism' in East Europe.

D. Symons's 'The evolution of human sexuality' has made me change my mind radically on the influence of biology upon human behaviour. I tended to neglect it completely for mostly ideological reasons.

Wolfgang