I just found this on my computer

[xblack_featherx]

Listen to the MUSTN'Ts, child,
Listen to the DON'Ts
Listen to the SHOULDN'Ts
The IMPOSSIBLEs, the WON'Ts
Listen to the NEVER HAVEs
Then listen close to me--
Anything can happen, child,
ANYTHING can be

Shel Silverstein