"Each Child has at birth, a Bowl of perfect Light. If he tends his 

Light, it will grow in strength, and he can do all things- swim with 

the shark, fly with the birds, know and understand all things. If, 

however, he becomes envious or jealous, he drops a stone into his 

Bowl of Light, and some of the Light goes out. Light and the stone 

cannot hold the same space. If he continues to put stones in the

 Bowl of Light, the Light will go out, and he will becomes a stone. 

A stone does not grow, nor does it move. If at any time he tires of

 being a stone, all he needs to do is turn the bowl upside down, and

 the stones will fall away, and the Light will grow once more"- 

Tales from the Night Rainbow.