There are thoughts and emotions which tend to unity, such as love, sympathy, reverence, benevolence; there are others which tend to disunion, such as hatred, jealousy, envy, pride, cruelty, fear.

Obviously the former group are for us the right, the latter group are for us the wrong.
In all these thoughts and feelings which are clearly wrong, we recognize one dominant note, the thought of self; while in all those which are clearly right we recognize that the thought is turned toward others, and that the personal self is forgotten.

Wherefore we see that selfishness is the one great wrong, and that perfect unselfishness is the crown of all virtue.

This gives us at once a rule of life.

The man who wishes intelligently to co-operate with the Divine Will must lay aside all thought of the advantage or pleasure of the personal self, and must devote himself exclusively to carrying out that Will by working for the welfare and happiness of others.
This is a high ideal, and difficult of attainment, because there lies behind us such a long history of selfishness.