It is not surprising that one often finds two persons becoming most harmonious or great friends in whose evolution there is so vast a difference that one cannot understand how it can be possible. But, as said before, association must have an effect. However thoughtful and wise a person may be, there can come a cloud upon his thought and wisdom through association. Perhaps that cloud may be dispersed after a time, but it can cover the light of the sun. The cloud is much smaller compared to the sun, but often it can cover the whole sun from our sight. The influence of a wicked person may cover the light of a good and wise person, and this may remain until the clouds have dispersed.