A clip with meaningful explanation:
http://www.youtube.com/watch?v=XJuc1gjztfw
Human life is short and limited, and our lives are very precious
because we are born as human beings, as the Buddha taught us that
"It's hard to be born human". Life may be hard and painful, but
life's hardships are an experience, a process to train ourselves,
to grow and mature, and therefore to gradually perfect our
character and morality so that we can become peaceful and calm and
also help others to become peaceful and calm
~ Venerable Sheng yen