What, generally, man knows about love is the give and take: "If you give me twelve pence, I will give you a shilling." For as long as one sees life in the form of business, in the form of give and take, he does not know love, and it is a great pity, when, after knowing something of love, the heart has turned cold and bitter. And what reason is there? The reason is this, that when one digs the ground one must dig until the water comes. But if one digs halfway, then there is no water, there is mud.