The next time somebody gets a lecture from a priest on the necessity of sexual restraint, their first reaction might be one of cynicism.

Omission to do what is necessary Seals a commission to a blank of danger; And danger, like an ague, subtly taints Even then when we sit idly in the sun.

The art of our necessities is strange, That can make vile things precious.

No, rather I abjure all roofs, and choose To wage against the emnity o' th' air, To be a comrade with the wolf and owl, Necessity's sharp pinch.

Now we sit close about this taper here And call in question our necessities.

Necessity is the plea for every infringement of human freedom. It is the argument of tyrants; it is the creed of slaves.