Can't we safely infer there's an end to the brute?

You may, if you please, supersede Revelation,

By wholly new methods of ratiocination;

Though, since head and heart need be in contradiction,

Why should reason hold faith under any restriction?

Shut your eyes, and guess down heaven's good pious fiction.

Noah's ark was superfluous. Where were his brains,

For those beasts and those sons to provide with such pains,

When they might to a deluge cry Fiddle di dee,

And sprout fins and scales, if they took to the sea?