A keen study will make us understand how these things work, but from childhood we have been so absorbed in our own life and interest that we do not think much about how the thought and feeling of those around us act upon us. A rich man, displeased with his porter or servant, may speak roughly to him or insult him, not realizing at the time that perhaps the feeling of the servant, who is dependent and bound to that particular place, who thinks that his situation keeps him in that position, is hurt. Then, when the rich man goes to his office, to his affairs, he gets that pinprick there; he does not know why. He thinks that he has given a pinprick to a servant who could not return it, but someone else returns it. He feels it but does not know that it is the answer of the same thing he has done.