Letters on Wave Mechanics

Now first and foremost my very hearty thanks for your kind invitation to stay with you which I of course accept with the utmost pleasure.

You are quite correct that one is most often in want of just this possibility of being alone for a few hours in situations where everyone around is striving to be nice to one.

If one still gets a little tired after a few days—the pleasure of the interesting dialogues would be sufficient compensation, to say nothing of the stimulation and the positive challenge.