Our real blessings often appear to us in the shape of pains, losses and disappointments; but let us have patience and we soon shall see them in their proper figures.
Self-denial and self-discipline, however, will be recognized as the outstanding qualities of a good soldier.
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.