When it refers to the body, it expresses the idea that what is foreign to the body should not be there; and this is the first stage of purity. When a person is spoken of as pure-minded, does it not mean that only that which is natural to the mind remains there, and that all which is unnatural has been washed away? This leads us to the question as to what is natural to the mind; and for an answer we cannot do better than to take the mind of a little child. What do we find there? We find first of all faith, the natural tendency to trust; then love, the natural tendency towards friendliness and affection; then hope, the natural expectancy of joy and happiness.