Upanishads on War

With this second part, the Ruler of Death begins his instructions regarding the great Hereafter. There are two paths,--one leading Godward, the other leading to worldly pleasure. He who follows one inevitably goes away from the other; because, like light and darkness they conflict. One leads to the imperishable spiritual realm; the other to the perishable physical realm. Both confront a man at every step of life. The discerning man distinguishing between the two, chooses the Real and Eternal, and he alone attains the highest, while the ignorant man, preferring that which brings him immediate and tangible results, misses the true purpose of his existence. Although Yama put before Nachiketas many temptations to test his sincerity and earnestness, he judging them at their real value, refused them all, saying "I have come from the mortal realm, shall I ask for what is mortal? I desire only that which is eternal." Then Death said to him: "I now see that thou art a sincere desirer of Truth. I offered thee vast wealth, long life and every form of pleasure which tempts and deludes men; but thou hast proved thy worthiness by rejecting them all."