I must confess that, at that time, I had absolutely no knowledge of the slowness of the relaxation processes in the ground state, processes which take place in collisions with the wall or with the molecules of a foreign gas.

We should note that this latter type of shift was successfully amplified to a considerable extent by Russian physicists using the intense light of a ruby laser whose wavelength is close to that of a transition of the potassium atom.

We see in the electroencephalogram a concomitant phenomenon of the continuous nerve processes which take place in the brain, exactly as the electrocardiogram represents a concomitant phenomenon of the contractions of the individual segments of the heart.

One can state, without exaggeration, that the observation of and the search for similarities and differences are the basis of all human knowledge.

When we separated, I did not want to get in a slugfest. I had to take the high ground.

I had a job when I was 16 at a gas fitter, which was a bit like a pipe fitter.