Nothing is less predictable than the development of an active scientific field.

it is good to have measured myself, to recognize my limitations.

My main point today is that usually one gets what one expects, but very rarely in the way one expected it.

Refining is inevitable in science when you have made measurements of a phenomenon for a long period of time.

I was lucky because logarithmic plots are a device of the devil.

Don't wait for extraordinary circumstance to do good; try to use ordinary situations.

There is nothing more beautiful than cheerfulness in an old face, and among country people it is always a sign of a well-regulated life.