The one important thing I have learned over the years is the difference between taking one's work seriously and taking one's self seriously. The first is imperative, and the second is disastrous.
A person needs at intervals to separate himself from family and companions and go to new places. He must go without his familiars in order to be open to influences, to change.
Often I am struck in amazement about a word: I suddenly realize that the complete arbitrariness of our language is but a part of the arbitrariness of our own world in general.