“On the whole, the longing for solitude is a sign that there still is spirit in a person and is the measure of what spirit there is. [...] In antiquity as well as in the Middle Ages there was an awareness of this longing for solitude and a respect for what it means; whereas in the constant sociality of our day we shrink from solitude to the point (what a capital epigram!) that no use for it is known other than as a punishment for criminals.”