For it is difficult for any of us to calculate exactly on what scale his words or his gestures are apparent to others. Partly from the fear of exaggerating our own importance, and also because we enlarge to enormous proportions the field over which the impressions formed by other people in the course of their lives are obliged to extend, we imagine that the accessories of our speech and attitudes scarcely penetrate the consciousness, still less remain in the memory of those with whom we converse.