Some spy doth watch, in mirth’s unguarded hour

To seize stray thoughts which haply may transgress

The straitened bounds of prudence.

Leonardo.

Hush! you tread

Close on its limits now. The mighty ones

Are like the gods, invisible and present.

Vincentio.

Aye, like the gods too, that their cunning visits

Their destined victims with a wholesome madness!