A breadth of heart is what is needed for all this. The weapon is the thought "nothing matters." It takes bravery to say "nothing matters." It is the breadth of his heart that makes a man great, whereas it is narrowness of heart that makes him small. The great heart does not think "how troublesome that person is," "Why should I be bothered like this?" It is only the narrow heart that thinks "I will cause him some trouble." It may be right, but still it is a narrow thought. The one of broad heart thinks: "this is a small thing, I can put up with this; there won't be much harm coming from it."