I think it is a sad reflection on our civilization that while we can and do measure the temperature in the atmosphere of Venus we do not know what goes on inside our soufflés.

I think I have been much of my life an irritant. But some people say that something good came out of my research, something valuable that could be regarded as a pearl, and I can assure those who worked with me it was you who made the pearls and I was merely the grain of sand, the irritant to produce the pearls.