The author was fascinated all his life by the question of man’s suffering. Why the men in his searching for happiness find only pain? Why is the man eager to prolong his life when he is living in pain? What makes him run like hypnotize after nonexistence goals? What makes him die for ideas and ideals that are changing repeatedly? The answer that he has found was amazingly simple but hard to be accepted - thinking, is the reason for this eccentric behavior of man.