meaning lies within knowing thyself. When you find yourself hungry, ask who is it that is hungry. when you are tired, who is tired? who is angry? when you find out who this is, you will know the meaning of life. The yogi seeks to know that principle by which all else is known. You may know the entire world, but if you dont know yourself, you will know it all falsely. And if you know nothing of the world, but only of yourself, you will know the true nature of all things.