All things are finite, but desires are endless; it is human nature to always want more. A beggar living hand-to-mouth seeks food and warmth, a critically ill person seeks recovery, a fading elder seeks youth, a well-read scholar seeks fame and wealth, and an emperor seeks immortality—all of these are, in essence, desires. It is just that once people obtain what they wanted, they often forget their original aspiration and turn to crave even more.