The battle of each individual has a different character, depending upon his particular grade of evolution. Therefore every person's battle in life is of a different and peculiar character. No person in the world is free from that battle; only one is more prepared for it; the other, perhaps, is ignorant of the law of warfare. In the success of this battle is the fulfillment of life. The Bhagavad Gita, the Song Celestial, from beginning to end is a teaching on the law of life's warfare.