L'ottimismo conviene

If you are an optimist, you have a better chance of making a self-fulfilling prophecy. If you say this is a wonderful world and we can make it better, then there is a chance that people will listen to you and do what you say.


Arthur C. Clarke, 1982, citato in Arthur C. Clarke, The authorized biography, Neil McAleer, ISBN 0809237202, p. 294