Sometimes when it is difficult for love to take away some impressions that are disagreeable, which block the way of the love-stream, they may be washed away by some element that can destroy them. The whole life is a chemical process, and knowledge of its chemistry helps man to make life happy. An unhappy person, being unhappy himself, cannot make others happy. It is a wealthy person who can help the one who is hard-up, not a poor person, however much desire he may have to help. It is the same with happiness, which is a great wealth; and a happy person can take away the unhappiness of another, for he has enough for himself and more besides for the others.