Besides, I would not stun your patient ears 230

With what it little boots you to attain.

He knows enough, the mariner, who knows

Where lurk the shelves, and where the whirlpools boil,

What signs portend the storm: To subtler minds

He leaves to scan, from what mysterious cause 235

Charybdis rages in th’ Ionian wave;

Whence those impetuous currents in the main,

Which neither oar nor sail can stem; and why

The roughning deep expects the storm, as sure