(4) The highest play of existence is to see the acts of another in harmony with self.

(5) Sympathy supports and prolongs the glow of one's own emotions.

(6) A friend confirms us in the practice of virtue.

(7) The sense of existence in ourselves is enlarged by the consciousness of another's existence (IX.).

The number of friends is again considered, and the same barriers stated--the impossibility of sharing among many the highest kind of affection, or of keeping up close and harmonious intimacy.