It is natural to regard highly the teachers who have passed away, for when a person has passed he is unapproachable, and the goodness of his spirit can be recognized. When the spirit is in physical form, it is more difficult to recognize spirituality in him and give him the same esteem as one who has passed. Sages and teachers in all ages have usually been recognized after they have died; in their lifetime they were neglected and even met with opposition.