41.   But a superstar can change the world.

42.   But can singing a folk song really change the world?

43.   But donations to the Democratic Party and pronouncements by the Federal Reserve chairman are not millennial events, capable of changing the world as we know it.

44.   But I have learned that in order to change the world you must be part of it from the inside.

45.   But if everyone did that, we would change the world.

46.   But in the last couple of years the Internet has radically changed the world of software.

47.   But it may prove useful for Mexico as it sets out to change its image in the world, if not to change the world.

48.   But some people clearly think that TiVo-like gadgets are about to change the world.

49.   But the Internet revolution, for all its speculative excesses, really is changing the world.

50.   But the portfolio does not actively identify companies that can change the world for the better.