December 3d. If events change men, much more persons. No man can meet another on the street without making some mark upon him. We say we exchange words when we meet; what we exchange is souls. And when intercourse is very close and very frequent, so complete is this exchange that recognizable bits of the one soul begin to show in the other's nature, and the second is conscious of a similar and growing debt to the first. The Changed Life, p.30.