The present state of atomic theory is characterized by the fact that we not only believe the existence of atoms to be proved beyond a doubt, but also we even believe that we have an intimate knowledge of the constituents of the individual atoms.

Rutherford is a man you can rely on; he comes regularly and enquires how things are going and talks about the smallest details - Rutherford is such an outstanding man and really interested in the work of all the people around him.

It is very difficult to make an accurate prediction, especially about the future.

There is no hope for any speculation that does not look absurd at first glance.

Oh what idiots we have all been, this is just as it must be

Nothing exists until it is measured.

Those who are not shocked when they first come across quantum theory cannot possibly have understood it.