DESIRES

Master Christ Jesus: For what shall it profit a man if he shall gain the whole world and lose his own soul [through desires]? Or what shall a man give in exchange for his soul?
Swami Vishwananda: You think, “Now I have gotten this beautiful thing that I desired so much. Now that I have it, I don’t have the same love for it. I don’t have the same enthusiasm about it.” What does the mind do? The mind tries to find something else to hold onto, but as long as man tries to hold onto a material thing, he will always stay on the material level. If you turn inward and focus on the Divine within the Self you will feel great happiness and great joy. But for that you should secure your faith.

Paramahansa Yogananda: If a departed soul has unfinished desires created while on the earth plane, it continues to feel in the astral those desires and the wish to express itself through a material body. And so that soul in its astral vehicle is drawn again into a united sperm and ovum cell and is once more in a physical form. -Paramahansa Yogananda

He's Got The Whole World In His Hands
http://www.youtube.com/watch?v=xSVs2EvdXYU&feature=related