American couples have gone to such lengths to avoid the interference of in-laws that they have to pay marriage counselors to interfere between them.
That is the great mistake about the affections. It is not the rise and fall of empires, the birth and death of kings, or the marching of armies that move them most. When they answer from their depths, it is to the domestic joys and tragedies of life.
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.