The basic problem of every living creature is survival in a hostile world. Countless generations ago, from the teeming human masses of the East, where the man lived in ever-present dread of famine, disease, flood, invasion, and vengeance of the gods
, a system or method of attaining physical and mental serenity under adverse and even horrible conditions, was introduced.
Man, in his essence
, has changed little in the course of historical time. The philosophy