Only because we do not know enough:

When Science has discovered something more

We shall be happier than we were before.

Hail, Britain, Mistress of the Azure Main,

Ten thousand Fleets sweep over thee in vain!

Hail, Mighty Mother of the Brave and Free,

That beat Napoleon, and gave birth to me!

Thou that canst wrap in thine emblazoned robe

One quarter of the habitable globe.

Thy mountains, wafted by a favouring breeze,