Art is dangerous. It is one of the attractions: when it ceases to be dangerous you don't want it.

“My mother groaned, my father wept, into the dangerous world I leapt.”

Fools and wise-folk are alike harmless. It is the half-wise, and the half-foolish, who are the most dangerous.

I'm a relatively respectable citizen. Multiple felon perhaps, but certainly not dangerous.

The master said, learning without thought is naught; thought without learning is dangerous

Learning without reflection is a waste. Reflection without learning is dangerous.