You do not know what is in an action. You cannot always judge a thing from the action. The judge has to see what is behind the action, and when a person has arrived at this stage of judgement, then he never dares to form an opinion, to judge. It is the ordinary person, the person who makes a thousand mistakes every day and overlooks them, who is ready to judge others. We have seen what purity of the body and purity of the mind means. However there is a further purity, which is the purity of the heart. This is reached by making the heart pure or free from all impressions which come from outside, which are foreign to one's nature. This can be done by overlooking the faults and shortcomings of others, by forgiving the faults of one's friends. By an increase of love one gives way to desirable impressions, which come upon one's heart and collect there, and in that way one keeps one's heart pure.