In my day, when you called on a girl, her mother was always hollering down to see if she was still unraped, the maid would look in, her father would shuffle his feet in another room. Today the boy calls up, says, 'Meet you at the back door of Stern's.'

My interest in society - at times so pronounced that the word 'snob' comes a little to mind - derives from the fact that I like an immense number of things which society, money, and position bring in their train: painting, tapestries, rare books, smart dresses, dances, gardens, country houses, correct cuisine, and pretty women.

Young men and young women, full of courage, originality, and genius, are everywhere to be met with.

I have never collected an object or figure from Africa or Oceania because of anything curious about it or because of its utility or historic interest. Everything has been chosen entirely because of its aesthetic significance; its form, feeling, structure, and plastic values.

Science isn't just about solving this or that puzzle. It's about understanding how the world works: the whole world from the vastness of the cosmos to the particularity of an individual human life. It's worth thinking about how all the different ways we have to talk about the world manage to fit together.

The word 'revolution' first brings to mind violent upheavals in the state, but ideas of revolution in science, and of political revolution, are almost coeval. The word once meant only a revolving, a circular return to an origin, as when we speak of revolutions per minute or the revolution of the planets about the sun.

Discovering traces of life on Mars would be of tremendous scientific significance: The first time that any signs of extraterrestrial life had ever been detected. Many people would also find it heartening to learn that we're not entirely alone in this vast, cold cosmos.

Galileo was no idiot. Only an idiot could believe that science requires martyrdom - that may be necessary in religion, but in time a scientific result will establish itself.